#include <stdio.h>
#include <string.h>
int main() {
  unsigned N;
  scanf("%u",&N);
  unsigned A[N], B[N];
  for(int i=0;i<N;i++) scanf("%u %u",&A[i],&B[i]);
  unsigned M;
  scanf("%u",&M);
  unsigned X[M], Y[M];
  unsigned Nok[M], NokMax=0;
  memset(Nok,0,sizeof(Nok));
  for(int i=0;i<M;i++) {
    scanf("%u %u",&X[i],&Y[i]);
    for(int j=0;j<N;j++)
      if(X[i]<=A[j]&&Y[i]>=B[j])
        Nok[i]++;
    if(Nok[i]>NokMax) NokMax=Nok[i];
  }
  if(NokMax==0) printf("0\n");
  else {
    for(int i=0;i<M;i++)
      if(Nok[i]==NokMax) printf("%d\n",i+1);
  }
  return 0;
}