n,m,k=map(int, input().split())
tree=[[]for DAVAI_POBYSTREE_RODNOI_POJALYISTA_PROSHY_POMOGI_MNE_ZDAT_ZADACHY_NA_STO_BALLOV_RADI_BOGA in range(n)]
tin=[0]*n
tout=[0]*n
t=0
level=[0]*n

def ancestor(a,b):
    return((tin[a]<=tin[b])and(tout[a]>=tout[b]))

def dfs(v, p, h):
    global t
    level[v] = h
    tin[v] = t
    t += 1
    for u in tree[v]:
        if u != p:
            dfs(u, v, h + 1)
    tout[v] = t
    t += 1

def KEK(tree,a,b):
    tree[a-1].append(b-1)
    tree[b-1].append(a-1)

rebra=list(map(int, input().split()))
for i in range(n-1):
    KEK(tree,rebra[i],i+2)
dfs(0,-1,0)
for i in range(m):
    u,v=map(int, input().split())
    if u==v:
       print('yes')
    else:
        if ancestor(u-1,v-1):
            if level[v-1]-level[u-1]<=k:
                print('yes')
        else:
            print('no')