You will be given a definition of a task first, then some input of the task.
Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Sharpe's Challenge is a British TV film from 2006, usually shown in two parts, which is part of an ITV series based on Bernard Cornwell's historical fiction novels about the English soldier Richard Sharpe during the Napoleonic Wars.
Output:
Which is the basis of Sharpe's Challenge?