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

Ex Input:
Sentence: 'a person skiing down part of a marked race course'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a airplane is seen at the airport with other airplanes'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'bunches of bananas are grouped on the ground'. How many words contain the letter 'm' in the sentence.

Ex Output:

0