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

Ex Input:
Sentence: 'a clock in the middle of a building'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a baseball player in the middle of a swing'. How many words contain the letter 'p' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'passenger rail rain arriving at the station for passenger pick up'. How many words contain the letter 't' in the sentence.

Ex Output:

3