mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.buffer.readline

    class SegmentTree:
        def __init__(self, A, initialize=True, segfunc=min, ident=2000000000):
            self.N = len(A)
            self.LV = (self.N - 1).bit_length()
            self.N0 = 1 << self.LV
            self.segfunc = segfunc
            self.ident = ident
            if initialize:
                self.data = [self.ident] * self.N0 + A + [self.ident] * (self.N0 - self.N)
                for i in range(self.N0 - 1, 0, -1):
                    self.data[i] = segfunc(self.data[i * 2], self.data[i * 2 + 1])
            else:
                self.data = [self.ident] * (self.N0 * 2)

        def update(self, i, x):
            i += self.N0 - 1
            self.data[i] = x
            for _ in range(self.LV):
                i >>= 1
                self.data[i] = self.segfunc(self.data[i * 2], self.data[i * 2 + 1])

        # open interval [l, r)
        def query(self, l, r):
            l += self.N0 - 1
            r += self.N0 - 1
            ret = self.ident
            while l < r:
                if l & 1:
                    ret = self.segfunc(ret, self.data[l])
                    l += 1
                if r & 1:
                    ret = self.segfunc(self.data[r - 1], ret)
                    r -= 1
                l >>= 1
                r >>= 1
            return ret

    # min
    def STfunc(a, b):
        if a < b:
            return a
        else:
            return b

    # クエリは0-indexedで[l, r)
    class SparseTable():
        def __init__(self, A):
            # A: 処理したい数列
            self.N = len(A)
            self.K = self.N.bit_length() - 1
            self.table = [[0] * (self.K + 1) for _ in range(self.N)]
            for i, a in enumerate(A):
                self.table[i][0] = a
            for k in range(1, self.K + 1):
                for i in range(self.N):
                    j = i + (1 << (k - 1))
                    if j <= self.N - 1:
                        self.table[i][k] = STfunc(self.table[i][k - 1], self.table[j][k - 1])
                    else:
                        self.table[i][k] = self.table[i][k - 1]

        def query(self, l, r):
            # [l, r)の最小値を求める
            k = (r - l).bit_length() - 1
            return STfunc(self.table[l][k], self.table[r - (1 << k)][k])

    # adj[0] must be empty list
    def EulerTour(adj, root):
        st = [root]
        ret = []
        seen = [0] * len(adj)
        par = [0] * len(adj)
        depth = [0] * len(adj)
        while st:
            v = st.pop()
            if seen[v]:
                ret.append(v)
                continue
            ret.append(v)
            seen[v] = 1
            if par[v] != 0:
                st.append(par[v])
                C[v-1] = max(C[v-1], C[par[v]-1])
            for u in adj[v]:
                if seen[u] == 0:
                    st.append(u)
                    par[u] = v
                    depth[u] = depth[v] + 1

        return ret, depth

    N, K, Q = map(int, input().split())
    C = list(map(int, input().split()))
    A = list(map(int, input().split()))
    adj = [[] for _ in range(N + 1)]
    for _ in range(N - 1):
        a, b = map(int, input().split())
        adj[a].append(b)
        adj[b].append(a)

    et, depth = EulerTour(adj, 1)
    depth_list = [0] * len(et)
    left = [-1] * (N + 1)
    right = [-1] * (N + 1)
    for i, v in enumerate(et):
        depth_list[i] = (depth[v] << 20) + v
        if left[v] < 0:
            left[v] = i
        right[v] = i
    ST = SparseTable(depth_list)

    L_list = [0] * K
    R_list = [0] * K
    for i, a in enumerate(A):
        L_list[i] = left[a]
        R_list[i] = right[a]

    L = SegmentTree(L_list)
    R = SegmentTree(R_list, segfunc=max, ident=-2000000000)

    for _ in range(Q):
        flg, x, y = map(int, input().split())
        if flg == 1:
            L.update(x, left[y])
            R.update(x, right[y])
        else:
            ll = L.query(x, y+1)
            rr = R.query(x, y+1)
            print(C[ST.query(ll, rr+1) % (1<<20) - 1])


if __name__ == '__main__':
    main()