#include <bits/stdc++.h>
#define ve vector<int>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define pi pair<int,int>
#define all(v) v.begin(),v.end()
#define si(v) (int)v.size()
#define en '\n'
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
const int N = 1e4 + 228;
const int big = 1e9;
int n;
ull fa[N];
int main(){
iostream::sync_with_stdio(false); cin.tie(0); ios_base::sync_with_stdio(false); cout.tie(0);
//freopen("input.txt","r",stdin);
//freopen("output.txt","w",stdout);
cin >> n;
fa[1] = 1ll;
for (int i = 2; i <= 50; i++) fa[i] = fa[i - 1] * 1ll * i;
for (int i = 1; i <= n; i++){
ull l1, r1, l2, r2;
cin >> l1 >> r1 >> l2 >> r2;
if ((fa[r2] / fa[l2 - 1]) % (fa[r1] / fa[l1 - 1]) == 0ll) cout << "DA\n"; else cout << "NE\n";
}
return 0;
}
