#include<iostream>
#include<algorithm>
using namespace std;
long long l1[510],l2[510];
void quickSort(long long A[], long long l, long long h);
long long partition (long long arr[], long long l, long long h);
void swap ( long long* a, long long* b )
{
long long t = *a;
*a = *b;
*b = t;
}
int main()
{
long long t;
cin>>t;
while(t--)
{
long long n,k,p,i,x,flag=0,j;
cin>>n>>k>>p;
l1[0]=1;
l2[0]=1;
for(i=1;i<=k;i++)
{
cin>>l1[i]>>x;
}
quickSort(l1,1,k);
// for(i=1;i<=k;i++)
// {
// cout<<l1[i]<<" ";
// }
for(i=1;i<=p;i++)
{
cin>>l2[i]>>x;
j=1;
while(l2[i]>l1[j])
{
j++;
}
if(l2[i]<l1[j])
{
flag=1;
}
}
if(flag==1)
cout<<"No"<<endl;
else
cout<<"Yes"<<endl;
}
return 0;
}
long long partition (long long arr[], long long l, long long h)
{
long long x = arr[h];
long long i = (l - 1);
for (long long j = l; j <= h- 1; j++)
{
if (arr[j] <= x)
{
i++;
swap (&arr[i], &arr[j]);
}
}
swap (&arr[i + 1], &arr[h]);
return (i + 1);
}
/* A[] --> Array to be sorted, l --> Starting index, h --> Ending index */
void quickSort(long long A[], long long l, long long h)
{
if (l < h)
{
long long p = partition(A, l, h); /* Partitioning index */
quickSort(A, l, p - 1);
quickSort(A, p + 1, h);
}
}
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