/* -*- coding: utf-8 -*-
 *
 * 1493.cc:  No.1493 隣接xor - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MAX_N = 200000;
const int MOD = 1000000007;

/* typedef */

typedef map<int,int> mii;

/* global variables */

int as[MAX_N], ass[MAX_N + 1];
int dp[MAX_N + 2], dss[MAX_N + 1];
mii mp;

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d", &n);

  for (int i = 0; i < n; i++)
    scanf("%d", as + i), ass[i + 1] = ass[i] ^ as[i];

  dp[1] = 1;
  for (int i = 1; i <= n; i++) {
    dss[i] = (dss[i - 1] + dp[i]) % MOD;
    mii::iterator mit = mp.find(ass[i]);
    int k = (mit == mp.end()) ? 0 : mit->second;
    dp[i + 1] = (dss[i] + MOD - dss[k]) % MOD;
    mp[ass[i]] = i;
  }

  printf("%d\n", dp[n + 1]);
  return 0;
}