import sys
readline=sys.stdin.readline
from collections import defaultdict

N=int(readline())
A=list(map(int,readline().split()))
for i in range(1,N-1):
    A[i]^=A[i-1]
A.pop()
def Subsequence_Count(lst,mod=0):
    le=len(lst)
    dp=[0]*(le+1)
    prev={}
    dp[0]=1
    for i in range(le):
        dp[i+1]=dp[i]+dp[i]-(dp[prev[lst[i]]] if lst[i] in prev else 0)
        if mod:
            dp[i+1]%=mod
        prev[lst[i]]=i
    return dp[le]

mod=10**9+7
ans=Subsequence_Count(A,mod)
print(ans)