def aa(m):
    global mod
    while m>1:
        m//=2
        seg[m]=(seg[m*2]+seg[m*2+1])%mod
def bb(l,r):
    global mod
    res=0
    while l<r:
        if l&1:
            res+=seg[l];l+=1
        if r&1:
            r-=1;res+=seg[r]
        l//=2;r//=2
    res%=mod
    return res

n=int(input())
a=list(map(int,input().split()))
x=[0];mod=10**9+7
for i in a:
    x.append(x[-1]^i)
v=1<<len(x).bit_length()
seg=[0]*v*2
y={};seg[v]=1;aa(v)
for i in x:
    y[i]=0
for i in range(1,n):
    seg[i+v]=bb(y[x[i]]+v,i+v);aa(i+v)
    y[x[i]]=i
print(seg[1])