//minamoto
#include<bits/stdc++.h>
#define R register
#define inf 0x3f3f3f3f
#define fp(i,a,b) for(R int i=a,I=b+1;i<I;++i)
#define fd(i,a,b) for(R int i=a,I=b-1;i>I;--i)
using namespace std;
char buf[1<<21],*p1=buf,*p2=buf;
inline char getc(){return p1==p2&&(p2=(p1=buf)+fread(buf,1,1<<21,stdin),p1==p2)?EOF:*p1++;}
int read(){
    R int res,f=1;R char ch;
    while((ch=getc())>'9'||ch<'0')(ch=='-')&&(f=-1);
    for(res=ch-'0';(ch=getc())>='0'&&ch<='9';res=res*10+ch-'0');
    return res*f;
}
char sr[1<<21],z[20];int C=-1,Z=0;
inline void Ot(){fwrite(sr,1,C+1,stdout),C=-1;}
void print(R int x){
    if(C>1<<20)Ot();if(x<0)sr[++C]='-',x=-x;
    while(z[++Z]=x%10+48,x/=10);
    while(sr[++C]=z[Z],--Z);sr[++C]='\n';
}
const int N=1005;
int dis[N][N],q[N],n,m,h,t,u,v,Q,k;bitset<N>sss[N][N],ans;vector<int>mp[N];
void bfs(int S,int *dis){
    fp(i,1,n)dis[i]=inf;q[h=t=1]=S,dis[S]=0;
    while(h<=t){
        u=q[h++];fp(i,0,mp[u].size()-1){
            v=mp[u][i];
            if(dis[v]==inf)dis[v]=dis[u]+1,q[++t]=v;
        }
    }fp(i,1,n)if(dis[i]!=inf)sss[S][dis[i]].set(i);
    fp(i,1,n)sss[S][i]|=sss[S][i-1];
}
int main(){
//  freopen("testdata.in","r",stdin);
    n=read(),m=read(),Q=read();fp(i,1,m)u=read(),v=read(),mp[u].push_back(v),mp[v].push_back(u);
    fp(i,1,n)bfs(i,dis[i]);
    while(Q--){
        k=read(),ans.reset();
        while(k--){
            u=read(),v=read();if(v>n)v=n;
            ans|=sss[u][v];
        }
        print(ans.count());
    }return Ot(),0;
}