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

Ex Input:
Sentence: 'a keyboard on a table with a toothbrush a book some sunglasses and coffee'. How many words contain the letter 'e' in the sentence.

Ex Output:
5

Ex Input:
Sentence: 'a cat in a tie sits on the couch'. How many words contain the letter 't' in the sentence.

Ex Output:
4

Ex Input:
Sentence: 'a passanger train on the railroad tracks by a gravel and grassy road'. How many words contain the letter 'f' in the sentence.

Ex Output:
0