#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define R cin>>
#define ln cout<<'\n'
#define ll long long
#define in(a) insert(a)
#define pb(a) push_back(a)
#define pd(a) printf("%.10f\n",a)
#define mem(a) memset(a,0,sizeof(a))
#define all(c) (c).begin(),(c).end()
#define iter(c) __typeof((c).begin())
#define rrep(i,n) for(ll i=(ll)(n)-1;i>=0;i--)
#define REP(i,m,n) for(ll i=(ll)(m);i<(ll)(n);i++)
#define rep(i,n) REP(i,0,n)
#define tr(it,c) for(iter(c) it=(c).begin();it!=(c).end();it++)
ll check(ll n,ll m,ll x,ll y){return x>=0&&x<n&&y>=0&&y<m;}void pr(){ln;}
template<class A,class...B>void pr(const A &a,const B&...b){cout<<a<<(sizeof...(b)?" ":"");pr(b...);}
template<class A>void PR(A a,ll n){rep(i,n)cout<<(i?" ":"")<<a[i];ln;}
const ll MAX=1e9+7,MAXL=1LL<<61,dx[8]={-1,0,1,0,-1,-1,1,1},dy[8]={0,1,0,-1,-1,1,1,-1};
typedef pair<ll,ll> P;

vector<ll> v[222222];
int ord[222222], low[222222];
void dfs(int x,int p,int &c,vector<P> &B){
  ord[x]=low[x]=c++;
  for(int i=0;i<v[x].size();i++){
    int y=v[x][i];
    if(y==p) continue;
    if(ord[y]==-1){
      dfs(y,x,c,B);
      low[x]=min(low[x],low[y]);
    } else{
      low[x]=min(low[x],ord[y]);
    }
    if(ord[x]<low[y]) B.push_back(P(x,y));
  }
}

void bridge(int n,vector<P> &B){
  B.clear();
  int c=0;
  fill(ord,ord+n,-1);
  for(int i=0;i<n;i++)if(ord[i]==-1)dfs(i,-1,c,B);
}

int p[200001],r[200001];
void init(ll n){rep(i,n)p[i]=i,r[i]=0;}
int find(int x){return (p[x]==x)?x:(p[x]=find(p[x]));}
void unite(int x,int y) {
  x=find(x),y=find(y);
  if(x==y)return;
  if(r[x]<r[y])p[x]=y;
  else{p[y]=x;if(r[x]==r[y])r[x]++;}
}
bool same(int x,int y){return find(x)==find(y);}

void Main() {
  ll n,m,T;
  cin >> n >> m >> T;
  rep(i,m) {
    ll x,y;
    cin >> x >> y;
    x--,y--;
    v[x].pb(y);
    v[y].pb(x);
  }
  vector<P> b;
  bridge(n,b);
  set<P> se;
  rep(i,b.size()) {
    se.in(b[i]);
    swap(b[i].F,b[i].S);
    se.in(b[i]);
  }
  init(n);
  rep(i,b.size()) unite(b[i].F,b[i].S);
  while(T--) {
    ll x,y;
    cin >> x >> y;
    x--,y--;
    if(same(x,y)) pr("Yes");
    else pr("No");
  }
}

int main(){ios::sync_with_stdio(0);cin.tie(0);Main();return 0;}