In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

Example input: North Willingham is a village and civil parish in the West Lindsey district of Lincolnshire, England. The population of the civil parish (including Sixhills) was 181 at the 2011 census. It is situated 3.5 mi east from the town of Market Rasen on the A631 road between Market Rasen and Louth. Question: Which had a bigger population at the 2011 census, North Willingham or Market Rasen? Answer: Market Rasen
Example output: Fact_1: North Willingham is a village and civil parish in the West Lindsey district of Lincolnshire, England. Fact_2: The population of the civil parish including Sixhills was 181 at the 2011 census.
Example explanation: Here, we can see that both generated facts are helpful in answering question.
Q: Robert Christian Hansen (February 15, 1939 August 21, 2014), known in the media as the "Butcher Baker", was an American serial killer. Between 1971 and 1983, Hansen abducted, raped and murdered at least 17, and possibly more than 30 women, in and around Anchorage, Alaska, hunting them down in the woods with a Ruger Mini-14 and other weapons. He was arrested and convicted in 1983 and was sentenced to 461 years with no possibility of parole. Question: The Frozen Ground was based on the crimes of which American serial killer? Answer: Robert Christian Hansen
A:
Robert Christian Hansen February 15, 1939 August 21, 2014, known in the media as the Butcher Baker, was an American serial killer.