#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
#define rep(i, n) for (int i = 0; i < (n); ++i)

using namespace std;
using mint = modint1000000007;

int main() {
    int n;
    cin >> n;
    
    vector<int> a(n);
    rep(i, n) cin >> a[i];
    vector<int> s(n+1);
    rep(i, n) s[i+1] = s[i]^a[i];
    s.erase(s.begin());
    s.pop_back();
    n--;
    
    mint ans = 1;
    map<int, mint> dp;
    rep(i, n) {
        mint tmp = ans;
        ans += ans-dp[s[i]];
        dp[s[i]] = tmp;
    }
    
    cout << ans.val() << '\n';
    
    return 0;
}