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 journal notebook keys book and backpack on a beige couch'. Is 'notebook' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'pink colored church building surrounded by a stone wall'. Is 'pink' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'a stop sign standing on the corner of a street'. Is 'sign' the longest word in the sentence?
Example Output:
No