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 horse that is standing in a stable'. Is 'standing' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'there are three people together on top of the mountain'. Is 'together' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'palm trees in front of a building and mountains in the background'. Is 'of' the longest word in the sentence?
Example Output:
No