import sys

def input():
    return sys.stdin.readline().rstrip()

"""
Do not get stuck on a problem for more than 20 minutes
Just check the editorial :)
There should be something else to do insead
"""

MOD = int(1e9 + 7)

from collections import defaultdict
def slv():
    n = int(input())
    a = list(map(int,input().split()))
    for i in range(1,n):
        a[i]^=a[i - 1]
    ans = 0
    
    d = defaultdict(list)
    for i,v in enumerate(a):
        d[v].append(i + 1)
    dp = [0]*(n + 10)
    sumdp = [0]*(n + 10)
    prev = [-1]*(n + 10)
    for v,li in d.items():
        for i in range(1,len(li)):
            prev[li[i]] = li[i - 1]
    dp[0] = 1
    sumdp[0] = 1
    for i in range(1,n):
        previ = prev[i]
        if previ != -1:
            dp[i] = sumdp[i - 1] - sumdp[previ - 1] 
            dp[i] %= MOD
        else:
            dp[i] = sumdp[i - 1]
        sumdp[i] = (sumdp[i - 1] + dp[i]) % MOD

    ans = sumdp[n - 1] % MOD

    print(ans)
    return 

def main():
    t = 1
    for i in range(t):
        slv()
    return 


if __name__ == "__main__":
    main()