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

Ex Input:
Sentence: 'a large dog curls up on the pillow on a bunk bed'. How many words contain the letter 't' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'the tall giraffes are communicating with each other by the tree'. How many words contain the letter 'j' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a girl sitting at a table with a birthday cake with candles sitting on it'. How many words contain the letter 'b' in the sentence.

Ex Output:

2