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

Ex Input:
Sentence: 'a man sleeping on a park bench then a woman looks at another man with a newspaper over his face on another park bench'. How many words contain the letter 't' in the sentence.

Ex Output:
5


Ex Input:
Sentence: 'man and woman posing for picture before prom'. How many words contain the letter 'c' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a bus is turning down the street next to a building'. How many words contain the letter 'b' in the sentence.

Ex Output:

2