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

Ex Input:
Sentence: 'a woman is standing at a fruit stand'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a sidewalk with a toilet laying on side with people in background'. How many words contain the letter 'o' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a fishing boat moving through the water of a harbor'. How many words contain the letter 'e' in the sentence.

Ex Output:

2