import sys

sys.setrecursionlimit(200005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()

# dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = (1 << 63)-1
# inf = (1 << 31)-1
md = 10**9+7
# md = 998244353

from collections import defaultdict

n = II()
aa = LI()

dp = [1]+[0]*n

x = 0
pre = defaultdict(int)
cs = [0, 1]
for i, a in enumerate(aa[:-1]):
    x ^= a
    j = pre[x]
    # for k in range(j, i+1):dp[i+1] += dp[k]
    dp[i+1] = (cs[i+1]-cs[j])%md
    cs.append((cs[-1]+dp[i+1])%md)
    pre[x] = i+1
# print(dp)
print(cs[-1])