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

Ex Input:
Sentence: 'a pizza pie is on a wooden serving tray'. How many words contain the letter 's' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'the bowl on the table is full of cut fruit'. How many words contain the letter 'b' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'there is a adult pony and a baby pony on a field together'. How many words contain the letter 'j' in the sentence.

Ex Output:

0