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

Ex Input:
Sentence: 'a silver truck a street a person and buildings'. How many words contain the letter 'l' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a young person flying through the air while riding a skateboard'. How many words contain the letter 'd' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a couple of clocks sit next to each other'. How many words contain the letter 't' in the sentence.

Ex Output:

4