You will be given a definition of a task first, then some input of the task.
In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.

Question: What time period was the Seven Years' War? Passage:Charles-Joseph Lamoral, 7th Prince de Ligne in French; in German Karl-Joseph Lamoral 7. Furst von Ligne (also known as Karl Furst von Ligne or Furst de Ligne): (23 May 1735 13 December 1814) was a Field Marshal, inhaber of an infantry regiment, prolific writer, intellectual, member of the princely family of Ligne, and Habsburg Austrian subject. He fought as a field officer during several famous battles during the Seven Years' War and briefly returned to military duty in the War of the Bavarian Succession. He performed an important diplomatic mission to Catherine the Great in 1787 and led troops against the Ottoman Empire at Belgrade in 1789. Beginning in the 1770s, he authored an impressive volume of work. After his estates in the Austrian Netherlands were lost to France during the War of the First Coalition, he lived in Vienna. All three of his sons died before him, but his wife and four daughters all outlived him. His grandson, the 8th Prince, became a Belgian statesman.

Output:
b