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

Ex Input:
Sentence: 'an older fighter plan sitting next to a group military men'. How many words contain the letter 'y' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'pair of one kind of birds and another bird perched on a railing'. How many words contain the letter 'j' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'there is cat standing on a sink looking at the faucet'. How many words contain the letter 'b' in the sentence.

Ex Output:

0