def get_input():
    command = input( " : ").split()
    verb_word = command[0]
    if verb_word in verb_dict:
        verb = verb_dict [verb_word]
    else :
        print ("Unknown verb {}".format(verb_word))
        return
    if len(command) >=2:
        noun_word = command [1]
        print(verb (noun_word))
    else:
        print (verb ("nothing"))
def say(noun):
    return 'You said "{}"'.format(noun)
verb_dict = {
    "say":say,
}
while True:
    get_input()