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.
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Question: Who played charlie in the chocolate factory 2005?

Answer: Alfred Thomas Highmore


Question: How are point sources of pollution regulated by the cwa?

Answer: requires dischargers to obtain a National Pollutant Discharge Elimination System (NPDES) permit


Question: How many episodes of on my block are there?

Answer:
20