class UnionFind:
    def __init__(self,n):
        self.n = n
        self.parent_size = [-1]*n
 
    def leader(self,a):
        if self.parent_size[a] < 0:
            return a
        self.parent_size[a] = self.leader(self.parent_size[a])
        return self.parent_size[a]
 
    def merge(self,a,b):
        x, y = self.leader(a), self.leader(b)
        if x == y:
            return 
        if abs(self.parent_size[x]) < abs(self.parent_size[y]):
            x, y = y, x
        self.parent_size[x] += self.parent_size[y]
        self.parent_size[y] = x
        return 
 
    def same(self,a,b):
        return self.leader(a) == self.leader(b)
 
    def size(self,a):
        return abs(self.parent_size[self.leader(a)])
 
    def groups(self):
        result = [[] for _ in range(self.n)]
        for i in range(self.n):
            result[self.leader(i)].append(i)
        return [r for r in result if r != []]

H, W = map(int, input().split())
A = [list(map(int, input().split())) for _ in range(H)]
Q = int(input())
query = [list(map(int, input().split())) for _ in range(Q)]

def IDX(i, j):
    return i*W+j

edge = []
for i in range(H):
    for j in range(W):
        if i+1 < H:
            edge.append((IDX(i, j), IDX(i+1, j), max(A[i][j], A[i+1][j])))
        if j+1 < W:
            edge.append((IDX(i, j), IDX(i, j+1), max(A[i][j:j+2])))
edge.sort(key=lambda x:x[2])

left = [0]*Q
right = [len(edge)]*Q
mid = [[] for _ in range(len(edge)+1)]
for i in range(Q):
    mid[len(edge)//2].append(i)

cnt = 0
while cnt < Q:
    UF = UnionFind(H*W)
    for i in range(len(edge)+1):
        if len(mid[i]) >= 1:
            while mid[i]:
                idx = mid[i].pop()
                sh, sw, gh, gw = query[idx]
                if UF.same(IDX(sh-1, sw-1), IDX(gh-1, gw-1)):
                    right[idx] = i
                else:
                    left[idx] = i
                if left[idx]+1 == right[idx]:
                    cnt += 1
                else:
                    mid[(left[idx]+right[idx])//2].append(idx)
        if i < len(edge):
            v, w, c = edge[i]
            UF.merge(v, w)

for i in range(Q):
    print(edge[left[i]][2])