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

Ex Input:
Sentence: 'two animals are walking along in a field'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a couple of zebras and antelopes captured on a wildlife camera'. How many words contain the letter 'm' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a traffic light with a pedestrian crossing signal on a street corner next to balloons'. How many words contain the letter 'i' in the sentence.

Ex Output:

6