from collections import defaultdict

mp = defaultdict(list)

n,k = map(int,input().split())

for i in range(k):
    course_id,Ni = map(int,input().split())
    for x in input().split():
        mp[x].append(course_id)


for x in input().split():
    # print(x,end='')
    # print(f' {len(mp[x])}',end = '')
    # li = mp[x]
    # li.sort()
    # for y in li:
    #     print(f' {y}',end = '')
    # print()

    # 这两种写法完全等价，但下面这种更加优雅
    mp[x].sort()
    if x in mp:
        print(x,len(mp[x]),*mp[x])
    else:
        print(x,0)