#include <bits/stdc++.h>
#include <atcoder/all>
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#define SELECTER(_1,_2,_3,SELECT,...) SELECT
#define rep1(i,n) for(int i=0;i<(int)n;++i)
#define rep2(i,a,n) for(int i=(int)a;i<(int)n;++i)
#define rep(...) SELECTER(__VA_ARGS__,rep2,rep1)(__VA_ARGS__)
#define RSELECTER(_1, _2, _3, RSELECT, ...) RSELECT
#define rrep1(i,n) for(int i=(int)(n)-1;i>=0;--i)
#define rrep2(i,a,n) for(int i=(int)(n)-1;i>=(int)a;--i)
#define rrep(...) RSELECTER(__VA_ARGS__, rrep2, rrep1)(__VA_ARGS__)
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define fi first
#define se second
#define PrintR LogOutput
#ifdef _DEBUG
#define Log(...) LogOutput(__VA_ARGS__)
#else
#define Log(...)
#endif
#define M_PI 3.14159265358979323846
using namespace std;
using namespace atcoder;
using ll=long long;
using ld=long double;
using pii=pair<int,int>;
using pll=pair<long long,long long>;
using pdd=pair<long double,long double>;
using tp=tuple<int,int,int>;
using tpll=tuple<ll,ll,ll>;
using veci=vector<int>;
using vecpii=vector<pair<int,int>>;
using vecll=vector<long long>;
using vecpll=vector<pair<long long,long long>>;
using vecpdd=vector<pair<long double,long double>>;
using vecs=vector<string>;
using vecb=vector<bool>;
using vecd=vector<long double>;
using vectp=vector<tp>;
using vectpll=vector<tpll>;
using mint=modint998244353;
using mint10=modint1000000007;
template<typename T, typename S>
istream& operator>>(istream& in, pair<T, S>& a){return in >> a.first >> a.second;}
template<typename T, typename S>
ostream& operator<<(ostream& out, const pair<T, S>& a){return out << a.first << ' ' << a.second;}
ostream& operator<<(ostream& out, const mint& a){return out << a.val();}
ostream& operator<<(ostream& out, const mint10& a){return out << a.val();}
ostream& operator<<(ostream& out, const modint& a){return out << a.val();}
template<typename T>
ostream& operator<<(ostream& out, const vector<T>& d){for(int i = 0 ; i < d.size() ; ++i) out << d[i] << (i == d.size() - 1 ? "" : " "); return out;}
template<typename T, typename S>
pair<T, S> operator+(const pair<T, S>& a, const pair<T, S>& b){return {a.fi + b.fi, a.se + b.se};}
template<typename T, typename S>
pair<T, S> operator-(const pair<T, S>& a, const pair<T, S>& b){return {a.fi - b.fi, a.se - b.se};}
template<class T> inline bool chmax(T& a,T b){if(a<b) {a=b;return true;} return false;}
template<class T> inline bool chmin(T& a,T b){if(a>b) {a=b;return true;} return false;}
bool Judge(int i, int j, int h, int w){return i < 0 || j < 0 || i >= h || j >= w;}
bool PrintA(int i){cout<<(i ? "Yes" : "No")<<endl;return i;}

constexpr ll INF=numeric_limits<ll>::max() >> 2;
constexpr int inf=numeric_limits<int>::max() >> 1;
constexpr ll MOD=998244353;
const int vi[] = {0, 1, 0, -1}, vj[] = {1, 0, -1, 0};

template<typename... Args>
void LogOutput(Args&&... args){
	stringstream ss;
	((ss << args << ' '), ...);
	cout << ss.str().substr(0, ss.str().length() - 1) << endl;
}
template<typename T>
void LogOutput(vector<vector<T>>& data){for(auto d : data) LogOutput(d);}

int main(){
	ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
	int h, w;cin>>h>>w;
	vector a(h, veci(w));
	rep(i, h) rep(j, w) cin>>a[i][j];
	int q;cin>>q;
	veci fr(q), to(q);
	vector<veci> c(h * w);
	rep(i, q){
		int l, r, x, y;cin>>l>>r>>x>>y;
		l--, r--, x--, y--;
		fr[i] = l * w + r, to[i] = x * w + y;
		c[l * w + r].push_back(i);
		c[x * w + y].push_back(i);
	}
	dsu t(h * w);
	veci idx(h * w);
	veci lc(h * w);
	iota(all(idx), 0);
	iota(all(lc), 0);
	sort(all(idx), [&](int i, int j){return a[i / w][i % w] < a[j / w][j % w];});
	veci used(h * w);
	veci ans(q, inf);
	rep(i2, h * w){
		int i = idx[i2];
		rep(k, 4){
			int ni = i / w + vi[k];
			int nj = i % w + vj[k];
			if(Judge(ni, nj, h, w) || !used[ni * w + nj] || t.same(i, ni * w + nj)) continue;
			int ra = lc[t.leader(i)], rb = lc[t.leader(ni * w + nj)];
			t.merge(i, ni * w + nj);
			if(c[ra].size() > c[rb].size()) swap(ra, rb);
			lc[t.leader(i)] = rb;
			while(c[ra].size()){
				if(t.same(fr[c[ra].back()], to[c[ra].back()])) chmin(ans[c[ra].back()], a[i / w][i % w]);
				else c[rb].push_back(c[ra].back());
				c[ra].pop_back();
			}
		}
		used[i] = 1;
	}
	rep(i, q) cout<<ans[i]<<endl;
}