#include <bits/stdc++.h>
using namespace std;
const int MAX = 2000003;
const int MOD = 1000000007;
long long fac[MAX], finv[MAX], inv[MAX];

void COMinit() {
    fac[0] = fac[1] = 1; finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++){
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}

long long COM(int n, int k){
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
int main() {
  int r1, c1, r2, c2;
  cin>>r1>>c1>>r2>>c2;
  COMinit();
  long long ans =
    COM(r2 + c2 + 2, r2 + 1)
    - COM(r1 + c2 + 1, r1)
    - COM(r2 + c1 + 1, r2 + 1)
    + COM(r1 + c1, r1);
  ans = (ans + MOD) % MOD;
  cout<<ans<<endl;
}