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

Ex Input:
Sentence: 'a car stopped at a red light at an intersection'. How many words contain the letter 'l' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a person eating a slice of pizza on a table'. How many words contain the letter 'z' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a lady and a man on a motorcycle'. How many words contain the letter 'o' in the sentence.

Ex Output:

2