Question:
Based on the premise "One of the most elegant Renaissance chateaux, Chenonceau and its famous long gallery are raised on arches to span the Cher river.", can we conclude that "The gallery of Chenonceau is the longest of its kind."?
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Answer:
it is not possible to tell

Question:
Based on the premise "I shall not require you again this evening.", can we conclude that "You are no longer required here, ever."?
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Answer:
no

Question:
Based on the premise "You cannot mean to shoot me?", can we conclude that "You cannot shoot me because that is a toy gun."?
****
Answer:
it is not possible to tell