In this task, you need to count the number of words in a sentence that contain the given letter

[EX Q]: Sentence: 'a fresh flower on a table in a piture of water'. How many words contain the letter 'n' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man and a woman sitting in the backseat as the woman talks on a cell phone'. How many words contain the letter 's' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a teddy bear in a cop uniform sitting on the lap of another teddy bear'. How many words contain the letter 'w' in the sentence.
[EX A]:
0