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

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 couple sitting on seats on a train'. How many words contain the letter 'z' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'a counter top that has many pots and ingredients on it'. How many words contain the letter 'b' in the sentence.

Ex Output:
0