In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.

Who started the fire at rick's on desperate housewives?
Porter, Preston

How many navratna companies are there in india?
14 Navratnas

When was the first hdb flat built in singapore?

1960