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.
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Question: Context: On 14 May, and Ariane 5ECA launched the Herschel and Planck spacecraft. Link Information: The spacecraft, built in the Cannes Mandelieu Space Center, under Thales Alenia Space Contractorship, was successfully launched from the Guiana Space Centre in French Guiana at 13:12:02 UTC on 14 May 2009 Answer: Herschel

Answer: Between the Hershel and Planck spacecrafts, which one was launched first?


Question: Context: he studied classics at Link Information: He then transferred to the Answer: University of Pennsylvania

Answer: Of the two universities Alfred attended, which one admits more international students?


Question: Context: Mark first appears in season two, Link Information: The second season of the American television medical drama Grey's Anatomy commenced airing on the American Broadcasting Company (ABC) on September 25, 2005 Answer: September 25, 2005

Answer:
On what day did the season begin that Mark Sloan first appears?