#include <bits/stdc++.h>
using namespace std;

#define watch(x) cerr << (#x) << ": " << (x) << endl
#define int long long

const int MOD = 1000000007;
int r1, r2, c1, c2;

struct mint {
    int val;
 
    mint(int v = 0) {
        val = v % MOD;
        if(val < 0) val += MOD;
    }
 
    static int mod_inv(int a, int m = MOD) {
        int g = m, r = a, x = 0, y = 1;
 
        while (r != 0) {
            int q = g / r;
            g %= r; swap(g, r);
            x -= q * y; swap(x, y);
        }
 
        return x < 0 ? x + m : x;
    }
 
    explicit operator int() const {
        return val;
    }
 
    mint& operator+=(const mint &other) {
        val += other.val;
        if (val >= MOD) val -= MOD;
        return *this;
    }
 
    mint& operator-=(const mint &other) {
        val -= other.val;
        if (val < 0) val += MOD;
        return *this;
    }
 
    static unsigned fast_mod(uint64_t x, unsigned m = MOD) {
        return x % m;
    }
 
    mint& operator*=(const mint &other) {
        val = fast_mod((uint64_t) val * other.val);
        return *this;
    }
 
    mint& operator/=(const mint &other) {
        return *this *= other.inv();
    }
 
    friend mint operator+(const mint &a, const mint &b) { return mint(a) += b; }
    friend mint operator-(const mint &a, const mint &b) { return mint(a) -= b; }
    friend mint operator*(const mint &a, const mint &b) { return mint(a) *= b; }
    friend mint operator/(const mint &a, const mint &b) { return mint(a) /= b; }
 
    mint& operator++() {
        val = val == MOD - 1 ? 0 : val + 1;
        return *this;
    }
 
    mint& operator--() {
        val = val == 0 ? MOD - 1 : val - 1;
        return *this;
    }
 
    mint operator++(int32_t) { mint before = *this; ++*this; return before; }
    mint operator--(int32_t) { mint before = *this; --*this; return before; }
 
    mint operator-() const {
        return val == 0 ? 0 : MOD - val;
    }
 
    bool operator==(const mint &other) const { return val == other.val; }
    bool operator!=(const mint &other) const { return val != other.val; }
 
    mint inv() const {
        return mod_inv(val);
    }
 
    mint pow(int p) const {
        assert(p >= 0);
        mint a = *this, result = 1;
 
        while (p > 0) {
            if (p & 1)
                result *= a;
 
            a *= a;
            p >>= 1;
        }
 
        return result;
    }
 
    friend ostream& operator<<(ostream &stream, const mint &m) {
        return stream << m.val;
    }
};

int sz;
mint _fac[2000009];
mint getf(int i) {
    if(sz == 0) {
        sz++;
        _fac[0] = 1;
    }
    while(sz <= i) {
        _fac[sz] = _fac[sz-1]*sz;
        sz++;
    }
    return _fac[i];
}

mint choose(int n, int k) {
    mint ans = 1;
    ans *= getf(n);
    ans /= getf(k);
    ans /= getf(n-k);
    return ans;
}

mint f(int r1, int r2, int c) {
    mint sm = 0;
    for(int i = r1; i <= r2; ++i) {
        int n = i+c+1;
        int k = min(i+1, c);
        mint ad = choose(n, k);
        sm += ad;
    }
    return sm;
}

int32_t main() {

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> r1 >> c1 >> r2 >> c2;

    mint ans = f(r1, r2, c2) - f(r1, r2, c1-1);

    cout << ans << endl;
    
    return 0;
}


Measured memory_bytes: 15872