from sys import stdout, setrecursionlimit
from math import ceil, floor, sqrt, comb
from collections import deque
def solve():
n, m, q = map(int, input().split(" "))
seg = []
for _ in range(m):
a, b = map(int, input().split(" "))
a -= 1
b -= 1
seg.append((a, b))
seg.sort()
mn = [float('inf')] * n
# print(seg)
queries = []
for i in range(q):
a, b = map(int, input().split(" "))
a -= 1
b -= 1
queries.append((a, b, i))
queries.sort()
queries.reverse()
res = [0] * q
for (a, b, i) in queries:
while seg and seg[-1][0] >= a:
aa, bb = seg.pop()
for j in range(aa, bb+1): mn[j] = min(mn[j], bb)
# print(a, b, mn)
mx = -float('inf')
for j in range(a, b+1): mx = max(mx, mn[j])
if mx <= b:
res[i] = "YES"
else:
res[i] = "NO"
print(*res, sep = "\n")
"""
we need a data structure that will let us update a range and query for maximum.
segment tree: let the current node be the max
"""
solve()
