In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.
--------
Question: Context: After a series of co-starring film roles, Lopez had her breakthrough when she was cast in the title role of Selena (1997), a biographical film about American singer-songwriter Selena Quintanilla-Pérez Link Information: 

Selena Quintanilla-Pérez (; April 16, 1971 – March 31, 1995) Answer: 2

Answer: How long after her death did the movie about Selena come out?


Question: Context: spin-off show Holby City Link Information: Casualty, stylised as CASUALY, is a British medical drama series that airs weekly on BBC One. It is the longest-running emergency medical drama television series in the world, and the most enduring medical drama shown on prime time television in the world. Created by Jeremy Brock and Paul Unwin, it was first broadcast in the United Kingdom on BBC One on 6 September 1986.  Answer: 13

Answer: How long had Casualty been airing before its spinoff first aired?


Question: Context: Trappers assembled pack trains at the junction of the Shoshone River and the Bighorn River, Link Information: The Shoshone River is a 100 mi long river in northern Wyoming Answer: The Bighorn River

Answer:
Which river that trappers assembled pack trains at the junction of is longer?