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

Ex Input:
Sentence: 'a television is sitting on a table in a room'. How many words contain the letter 'g' in the sentence.

Ex Output:
1


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: 'two giraffe standing next to each other at a zoo'. How many words contain the letter 'f' in the sentence.

Ex Output:

1