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#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <queue>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <ctime>
using namespace std;
int solve(){
//平衡返回支点的总重量,否则返回-1
int lw,ld,rw,rd;
scanf ( "%d%d%d%d" ,&lw,&ld,&rw,&rd);
if (!lw) lw = solve();
if (!rw) rw = solve();
return lw*ld == rw*rd?lw+rw:-1;
}
int main()
{
int cntcase;
scanf ( "%d" ,&cntcase);
while (cntcase--){
if (~solve()) puts ( "YES" );
else puts ( "NO" );
if (cntcase) puts ( "" );
}
return 0;
}
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