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.
Q: Context: Georges-Louis Leclerc de Buffon, also a native of Montbard, was preparing to bring out a multi-volume work on natural history, the Histoire naturelle, generale et particuliere, and in 1742 he invited Daubenton to assist him by providing anatomical descriptions Link Information: 7 September 1707 16 April 1788 Answer: 35
A:
How old was Georges-Louis Leclerc de Buffon when he invited Daubenton to assist him by providing anatomical descriptions?