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

Ex Input:
Sentence: 'a long train is coming down some tracks'. How many words contain the letter 'w' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'an orange cat laying on top of a wooden table'. How many words contain the letter 'l' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a person riding a surf board on a body of water'. How many words contain the letter 'j' in the sentence.

Ex Output:

0