import sys
input = lambda : sys.stdin.readline().rstrip()

sys.setrecursionlimit(2*10**5+10)
write = lambda x: sys.stdout.write(x+"\n")
debug = lambda x: sys.stderr.write(x+"\n")

n = int(input())
a = list(map(int, input().split()))
from collections import defaultdict
d = defaultdict(int)
M = 10**9+7
c = [0]
for v in a:
    c.append(c[-1]^v)
d[-1] = 1
s = 1
ans = 1
for v in c[1:-1]:
    val = s
    s += (val - d[v])
    s %= M
    d[v] = val
print(s%M)