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

Ex Input:
Sentence: 'three people that are looking at a monitor on the left side of the photo'. How many words contain the letter 'd' in the sentence.

Ex Output:
1

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: 'many luggage suitcases are arranged on the sidewalk'. How many words contain the letter 'l' in the sentence.

Ex Output:
2