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

Ex Input:
Sentence: 'cars parked on the side of the road beside a fire hydrant'. How many words contain the letter 'p' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a line of very tall buildings next to a clock tower'. How many words contain the letter 'o' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'the man is sitting on the bench on the side of the building'. How many words contain the letter 'i' in the sentence.

Ex Output:

4