Наследование классов

classes = {}
 
def add_class(classes, class_name, parents):
    if class_name not in classes:
        classes[class_name] = []
    classes[class_name].extend(parents)
    for parent in parents:
        if parent not in classes:
            classes[parent] = []
 
def found_path(classes, start, end, path=[]):
    path = path + [start]
    if start == end:
        return path
    if start not in classes:
        return None
    for node in classes[start]:
        if node not in path:
            newpath = found_path(classes, node, end, path)
            if newpath: return newpath
    return None
 
def answer(classes, parent, child):
    if not(parent or child) in classes or not found_path(classes, child, parent):
        return 'No'
    return 'Yes'
 
n = int(input())
for _ in range(n):
    class_description = input().split()
    class_name = class_description[0]
    class_parents = class_description[2:]
    add_class(classes, class_name, class_parents)
 
q = int(input())
for _ in range(q):
    question = input().split()
    parent = question[0]
    child = question[1]
    print(answer(classes, parent, child))

def dfs(classes, start, end, path=[]):
    if not path:
        path = [start]
    if start == end:
        yield path
    for node in classes[start]:
        yield from dfs(classes, node, end, path + [node])
 
 
classes = {}
for _ in range(int(input())):
    s = input()
    if ':' in s:
        child, parents = s.split(' : ')
        parents = parents.split()
        if child not in classes:
            classes[child] = []
        for parent in parents:
            classes[child].append(parent)
            if parent not in classes:
                classes[parent] = []
    else:
        child = s
        if child not in classes:
            classes[child] = []
 
# print(*classes.items(), sep='\n')
 
for _ in range(int(input())):
    parent, child = input().split()
    if (parent in classes and child in classes) \
            and list(dfs(classes, child, parent)):
        # print(*dfs(classes, child, parent))
        print('Yes')
    else:
        print('No')