#include<cstdio>
#include<vector>
#include<set>
#include<algorithm>
using std::vector;
using std::set;
const int N=500086,INF=1e9+7;
int n,m,q,il[N],ir[N],pre[N],suf[N],ml[N],mr[N],ql[N],qr[N],mnl[N<<2],mxr[N<<2];
bool ans[N];
vector<int>vec[N<<2],iv[N<<2];
set<int>s[N<<2];
int Max(int a,int b){return a>b?a:b;}
int Min(int a,int b){return a<b?a:b;}
int read(){
	char ch=getchar();int nn=0,ssss=1;
	while(ch<'0'||ch>'9'){if(ch=='-')ssss*=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){nn=nn*10+(ch-'0');ch=getchar();}
	return nn*ssss;
}
bool pushq(int k,int l,int r,int x){//询问插入至分治lca
	int mid=(l+r)>>1;if(ql[x]<=mid&&qr[x]>mid||l==r){vec[k].push_back(x);return true;}
	return qr[x]<=mid?pushq(k<<1,l,mid,x):pushq(k<<1|1,mid+1,r,x);
}
bool pushiv(int k,int l,int r,int x){//区间插入至分治lca
	int mid=(l+r)>>1;if(il[x]<=mid&&ir[x]>mid||l==r){iv[k].push_back(x);return true;}
	return ir[x]<=mid?pushiv(k<<1,l,mid,x):pushiv(k<<1|1,mid+1,r,x);
}
bool pushp(int k,int l,int r,int x,int y){//二维数点预备
	s[k].insert(y);if(l==r)return true;int mid=(l+r)>>1;
	return x<=mid?pushp(k<<1,l,mid,x,y):pushp(k<<1|1,mid+1,r,x,y);
}
bool ask(int k,int l,int r,int x,int y,int a,int b){//二维数点
	if(l>=x&&r<=y){
		set<int>::iterator it=s[k].lower_bound(a);
		if(it!=s[k].end())return (*it)<=b;return false;
	}
	int mid=(l+r)>>1;bool ret=false;
	if(x<=mid)ret|=ask(k<<1,l,mid,x,y,a,b);
	if(mid<y)ret|=ask(k<<1|1,mid+1,r,x,y,a,b);
	return ret;
}
bool build(int k,int l,int r){
	mnl[k]=INF;if(l==r)return true;int mid=(l+r)>>1;
	return build(k<<1,l,mid)&build(k<<1|1,mid+1,r);
}
bool pushl(int k,int l,int r,int x,int y){
	mxr[k]=Max(mxr[k],y);if(l==r)return true;int mid=(l+r)>>1;
	return x<=mid?pushl(k<<1,l,mid,x,y):pushl(k<<1|1,mid+1,r,x,y); 
}
bool pushr(int k,int l,int r,int x,int y){
	mnl[k]=Min(mnl[k],x);if(l==r)return true;int mid=(l+r)>>1;
	return y<=mid?pushr(k<<1,l,mid,x,y):pushr(k<<1|1,mid+1,r,x,y);
}
int gml(int k,int l,int r,int x,int y){
	if(l>=x&&r<=y)return mnl[k];int mid=(l+r)>>1,ret=INF;
	if(x<=mid)ret=Min(ret,gml(k<<1,l,mid,x,y));
	if(mid<y)ret=Min(ret,gml(k<<1|1,mid+1,r,x,y));
	return ret;
}
int gmr(int k,int l,int r,int x,int y){
	if(l>=x&&r<=y)return mxr[k];int mid=(l+r)>>1,ret=0;
	if(x<=mid)ret=Max(ret,gmr(k<<1,l,mid,x,y));
	if(mid<y)ret=Max(ret,gmr(k<<1|1,mid+1,r,x,y));
	return ret;
}
bool Div(int k,int l,int r){//分治
	if(l==r){
		if(!iv[k].empty()){ml[l]=mr[l]=l;pushl(1,1,n,l,r);pushr(1,1,n,l,r);}
		for(vector<int>::iterator it=vec[k].begin();it!=vec[k].end();it++)
			ans[*it]=ask(k,l,r,l,r,l,r);
		return true;
	}
	int mid=(l+r)>>1;Div(k<<1,l,mid);Div(k<<1|1,mid+1,r);
	for(vector<int>::iterator it=vec[k].begin();it!=vec[k].end();it++){
		int nl=ql[*it],nr=qr[*it];
		ans[*it]=ask(k,l,r,nl,mr[nl]+1,ml[nr]-1,nr);if(ans[*it])continue;
		if(ask(k,l,r,nl,mr[nl]+1,mid+1,nr)&&ask(k,l,r,nl,mid,ml[nr]-1,nr))ans[*it]=true;
	}
	for(vector<int>::iterator it=iv[k].begin();it!=iv[k].end();it++){
		pushl(1,1,n,il[*it],ir[*it]);
		pushr(1,1,n,il[*it],ir[*it]);
	}
	suf[mid]=ml[mid];pre[mid]=0;
	for(int i=mid-1;i>=l;i--)suf[i]=Min(suf[i+1],ml[i]);suf[l-1]=suf[l];//后缀ml最小值
	for(int i=mid+1;i<=r;i++)pre[i]=Max(pre[i-1],mr[i]);pre[r+1]=pre[r];//前缀mr最大值
	for(int i=mid;i>=l;i--){int rp=gmr(k,l,r,i,mr[i]+1);if(rp>mid)mr[i]=Max(rp,pre[rp+1]);}
	for(int i=mid+1;i<=r;i++){int lp=gml(k,l,r,ml[i]-1,i);if(lp<=mid)ml[i]=Min(lp,suf[lp-1]);}
	return true;
}
int main(){
	n=read();m=read();q=read();build(1,1,n);
	for(int i=1;i<=m;i++){il[i]=read();ir[i]=read();pushp(1,1,n,il[i],ir[i]);pushiv(1,1,n,i);}
	for(int i=1;i<=q;i++){ql[i]=read();qr[i]=read();pushq(1,1,n,i);}
	for(int i=1;i<=n;i++){ml[i]=i+1;mr[i]=i-1;}
	Div(1,1,n);for(int i=1;i<=q;i++)if(ans[i])puts("YES");else puts("NO");
}