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

Example Input: Sentence: 'an elephant stands in the grass near a tree'. How many words contain the letter 'c' in the sentence.
Example Output: 0

Example Input: Sentence: 'a woman is smiling next to a dog'. How many words contain the letter 'j' in the sentence.
Example Output: 0

Example Input: Sentence: 'the jet is flying through the sky during the day'. How many words contain the letter 'i' in the sentence.
Example Output:
3