import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons;
import core.bitop;

class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }
real readReal() { return readToken.to!real; }

bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }

int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }


struct ModInt(int M_) {
  import std.conv : to;
  alias M = M_;
  int x;
  this(ModInt a) { x = a.x; }
  this(long a) { x = cast(int)(a % M); if (x < 0) x += M; }
  ref ModInt opAssign(long a) { return (this = ModInt(a)); }
  ref ModInt opOpAssign(string op)(ModInt a) {
    static if (op == "+") { x += a.x; if (x >= M) x -= M; }
    else static if (op == "-") { x -= a.x; if (x < 0) x += M; }
    else static if (op == "*") { x = cast(int)((cast(long)(x) * a.x) % M); }
    else static if (op == "/") { this *= a.inv(); }
    else static assert(false);
    return this;
  }
  ref ModInt opOpAssign(string op)(long a) {
    static if (op == "^^") {
      if (a < 0) return (this = inv()^^(-a));
      ModInt t2 = this, te = ModInt(1);
      for (long e = a; e > 0; e >>= 1) {
        if (e & 1) te *= t2;
        t2 *= t2;
      }
      x = cast(int)(te.x);
      return this;
    } else return mixin("this " ~ op ~ "= ModInt(a)");
  }
  ModInt inv() const {
    int a = x, b = M, y = 1, z = 0, t;
    for (; ; ) {
      t = a / b; a -= t * b;
      if (a == 0) {
        assert(b == 1 || b == -1);
        return ModInt(b * z);
      }
      y -= t * z;
      t = b / a; b -= t * a;
      if (b == 0) {
        assert(a == 1 || a == -1);
        return ModInt(a * y);
      }
      z -= t * y;
    }
  }
  ModInt opUnary(string op: "-")() const { return ModInt(-x); }
  ModInt opBinary(string op, T)(T a) const {
    return mixin("ModInt(this) " ~ op ~ "= a");
  }
  ModInt opBinaryRight(string op)(long a) const {
    return mixin("ModInt(a) " ~ op ~ "= this");
  }
  bool opCast(T: bool)() const { return (x != 0); }
  string toString() const { return x.to!string; }
}

enum MO = 998244353;
alias Mint = ModInt!MO;

enum LIM = 4 * 10^^5 + 10;
Mint[] inv, fac, invFac;
void prepare() {
  inv = new Mint[LIM];
  fac = new Mint[LIM];
  invFac = new Mint[LIM];
  inv[1] = 1;
  foreach (i; 2 .. LIM) {
    inv[i] = -(Mint.M / i) * inv[cast(size_t)(Mint.M % i)];
  }
  fac[0] = invFac[0] = 1;
  foreach (i; 1 .. LIM) {
    fac[i] = fac[i - 1] * i;
    invFac[i] = invFac[i - 1] * inv[i];
  }
}
Mint binom(long n, long k) {
  if (0 <= k && k <= n) {
    assert(n < LIM);
    return fac[cast(size_t)(n)] * invFac[cast(size_t)(k)] * invFac[cast(size_t)(n - k)];
  } else {
    return Mint(0);
  }
}


Mint calc(int x, int y) {
  return binom(x + y, x);
}

void main() {
  prepare;
  
  try {
    for (; ; ) {
      const N = readInt();
      const M = readInt() + 1;
      const L = readInt();
      const K = readInt();
      auto A = new int[M + 1];
      auto B = new int[M + 1];
      A[0] = 0;
      B[0] = 0;
      foreach (i; 1 .. M) {
        A[i] = readInt();
        B[i] = readInt();
      }
      A[M] = N;
      B[M] = N;
      auto C = new int[L];
      auto D = new int[L];
      foreach (l; 0 .. L) {
        C[l] = readInt();
        D[l] = readInt();
      }
      
      int hit;
      auto lss = new int[][M];
      foreach (l; 0 .. L) {
        foreach (i; 0 .. M + 1) {
          if (C[l] == A[i] && D[l] == B[i]) {
            ++hit;
            goto foundHit;
          }
        }
        foreach (i; 0 .. M) {
          if (A[i] <= C[l] && C[l] <= A[i + 1] &&
              B[i] <= D[l] && D[l] <= B[i + 1]) {
            lss[i] ~= l;
            break;
          }
        }
       foundHit:
      }
      debug {
        writeln("hit = ", hit);
        writeln("lss = ", lss);
      }
      
      auto crt = new Mint[L + 1];
      crt[0] = 1;
      foreach (i; 0 .. M) {
        if (lss[i].empty) {
          const num = calc(A[i + 1] - A[i], B[i + 1] - B[i]);
          crt[] *= num;
        } else {
          alias Pt = Tuple!(int, "x", int, "y");
          Pt[] ps;
          ps ~= Pt(A[i], B[i]);
          ps ~= Pt(A[i + 1], B[i + 1]);
          foreach (l; lss[i]) {
            ps ~= Pt(C[l], D[l]);
          }
          ps.sort;
          const psLen = cast(int)(ps.length);
          auto dp = new Mint[][](psLen, psLen);
          dp[0][0] = 1;
          foreach (j; 0 .. psLen) foreach (k; j + 1 .. psLen) {
            const dx = ps[k].x - ps[j].x;
            const dy = ps[k].y - ps[j].y;
            if (dx >= 0 && dy >= 0) {
              foreach (s; 0 .. psLen - 1) {
                dp[k][s + 1] += dp[j][s] * calc(dx, dy);
              }
            }
          }
          auto fs = dp[psLen - 1][1 .. $];
          foreach_reverse (s; 0 .. psLen - 1) {
            foreach (t; s + 1 .. psLen - 1) {
              fs[s] -= binom(t, s) * fs[t];
            }
          }
          auto nxt = new Mint[L + 1];
          foreach (s; 0 .. L + 1) foreach (t; 0 .. psLen - 1) {
            if (s + t <= L) {
              nxt[s + t] += crt[s] * fs[t];
            }
          }
          crt = nxt;
        }
      }
      
      Mint ans;
      foreach (s; 0 .. L + 1) {
        if (hit + s <= K) {
          ans += crt[s];
        }
      }
      writeln(ans);
    }
  } catch (EOFException e) {
  }
}