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

Example 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.
Example Output: 0

Example Input: Sentence: 'a plate has many different types of food on it'. How many words contain the letter 'r' in the sentence.
Example Output: 1

Example Input: Sentence: 'a couple of people with a snowboard in a room'. How many words contain the letter 'l' in the sentence.
Example Output:
2