while True:
    query = input("Q: ")
    if query == "xxx": break
    ans = answer(query)
    print(f"A: {ans}")
    print("="*70)
    print()
	while True:
	query = input("Q: ")
	if query == "xxx": break
	ans = answer(query)
	print(f"A: {ans}")
	print("="*70)
	print()