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 couple of sandwiches and potato salad sit on a plate'. Is 'couple' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'the old train cars are parked in the lot together'. Is 'in' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'overhead street signs giving direction to different freeways'. Is 'overhead' the longest word in the sentence?
Example Output:
No