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 toddler looks at a fire hydrant while his mother watches him'. Is 'his' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'a blender with mixed fruit sitting in a container'. Is 'sitting' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'two planes sitting parked on the cement with a mountain in the background'. Is 'planes' the longest word in the sentence?
Example Output:
No