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 man laying on a bench reading a book'. Is 'book' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'modern parking meter on sidewalk with cars on the street'. Is 'on' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'an aluminum keyboard with a hand and a mouse in the background'. Is 'background' the longest word in the sentence?
Example Output:
Yes