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

Example Input: Sentence: 'some elephants in a field of grass near a tree'. How many words contain the letter 'k' in the sentence.
Example Output: 0

Example Input: Sentence: 'a woman is holding an umbrella and walking across the street'. How many words contain the letter 't' in the sentence.
Example Output: 2

Example Input: Sentence: 'some soup and broccoli in a small white bowl'. How many words contain the letter 'm' in the sentence.
Example Output:
2