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: 'a close up of a business sign on a building'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'there is a girl that is holding a wii in her hand'. How many words contain the letter 'd' in the sentence.

Ex Output:

2