premise: The Big Melt is a documentary film about the Sheffield steel industry which combines archive footage with a live soundtrack. It was made by Jarvis Cocker and filmmaker Martin Wallace for the 20th annual Sheffield Doc/Fest in 2013, to celebrate the centenary of the steel industry. The film was made using footage from the BFI National Archive.
hypothesis: Jarvis Cocker and Martin Wallis made The Big Melt as a gift.
reason: It only says that they made the film to celebrate the centenary of the steel industry, however, it does not say if there was any cost to Sheffield or if it was a gift. 