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

Ex Input:
Sentence: 'chopsticks and oriental food in white dishes sit on a wooden table'. How many words contain the letter 'z' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'a large airplane flying over a dry grass hillside'. How many words contain the letter 'e' in the sentence.

Ex Output:
4

Ex Input:
Sentence: 'three bicyclists are riding on the road with the cars'. How many words contain the letter 'o' in the sentence.

Ex Output:
2