#pragma GCC optimize ("O2")
#pragma GCC target ("avx")
#include<bits/stdc++.h>
//#include<atcoder/all>
//using namespace atcoder;

using namespace std;
typedef long long ll;
#define rep(i, n) for(int i = 0; i < (n); i++)
#define rep1(i, n) for(int i = 1; i <= (n); i++)
#define co(x) cout << (x) << "\n"
#define cosp(x) cout << (x) << " "
#define ce(x) cerr << (x) << "\n"
#define cesp(x) cerr << (x) << " "
#define pb push_back
#define mp make_pair
#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
#define Would
#define you
#define please


int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);


	int N;
	cin >> N;
	int A[200000];
	rep(i, N) cin >> A[i];

	const int mod = 1e9 + 7;
	map<int, ll> MP;

	if (N == 1) {
		co(1);
		return 0;
	}

	ll kotae = 2;
	MP[0] = 1;
	int x = 0;
	rep1(i, N - 2) {
		x ^= A[i];
		ll tmp = kotae - MP[x];
		kotae = (kotae + tmp) % mod;
		MP[x] = (MP[x] + tmp) % mod;
	}
	co((kotae + mod) % mod);

	Would you please return 0;
}