def get_parents(child, parents, classes):
    result = _rec(child, parents, classes)
    if result:
        print("Yes")
    else:
        print("No")


def _rec(child, parents, classes):
    if child in parents:
        return True
    elif parents[0] == 'object':
        return False
    else:
        for parent in parents:
            if _rec(parent, classes[parent], classes):
                return True
        return False