In this task, you need to answer 'Yes' if the given word is the longest word (in terms of number of letters) in the given sentence, else answer 'No'. Note that there could be multiple longest words in a sentence as they can have the same length that is the largest across all words in that sentence.

Example Input: Sentence: 'a split highway sign on a split highway'. Is 'a' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'an elephant painting a picture with its trunk'. Is 'elephant' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'a black and white photo of a locomotive and car'. Is 'a' the longest word in the sentence?
Example Output:
No