N,M=map(int, input().split())
A=[]
for i in range(M):
  a,b=map(int, input().split())
  a-=1;b-=1
  A.append((a,b))
  
C=list(map(int, input().split()))
W=list(map(int, input().split()))
par=[i for i in range(N)]
rank=[0]*(N)
def find(x):
  if par[x]==x:
    return x
  else:
    par[x]=find(par[x])
    return par[x]
 
#同じ集合か判定
def same(x,y):
  return find(x)==find(y)
 
def union(x,y):
  x=find(x)
  y=find(y)
  if x==y:
    return 
  if rank[x]>rank[y]:
    par[y]=x
  else:
    par[x]=y
    if rank[x]==rank[y]:
      rank[y]+=1
DD={}
for j in range(2**10):
  par=[i for i in range(N)]
  rank=[0]*(N)   
  D=[];s=0;now=j
  for k in range(10):
    D.append(j%2)
    s+=D[-1]*W[k]
    j//=2 
  for x,y in A:
    if D[C[x]-1]==1 and D[C[y]-1]==1:
      union(x,y)
  E=[]
  for i in range(N):
    E.append(find(i))
  DD[now]=(E,s)

Q=int(input())
for _ in range(Q):
  ans=10**20
  a,b=map(int, input().split())
  for d in DD:
    P,s=DD[d]
    if P[a-1]==P[b-1]:
      ans=min(ans,s)
  if ans==10**20:
    print(-1)
  else:
    print(ans)