Your task is to provide an oracle server at port 7777 on the local host. The oracle protocol is very simple. The client sends a single line containing a question to the oracle server, and the oracle server sends the answer in a single line and then disconnects.

The oracle server is not a real oracle. It simply checks whether the input is an actual question (that is, a line starting with "where", "when", "what", "why", "how", "who", "which"). If so, it sends the response "The answer is 42.". Otherwise, it sends the response "That was not a question."