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

MOD = 10**9+7
N = int(readline())
A = list(map(int, readline().split()))
for i in range(1, N):
    A[i] ^= A[i-1]
A = [-1] + A[:-1]
N = len(A)

dp = [0]*(N+1)
dp[0] = 1
Dp = dp[:]


pre = Counter()
for i in range(1, N):
    a = A[i]
    pidx = pre[a]
    pre[a] = i
    dp[i] = (Dp[i-1] - Dp[pidx-1])%MOD
    Dp[i] = (Dp[i-1] + dp[i])%MOD

print(Dp[N-1])