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

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: 'a large field is next to a river'. How many words contain the letter 'j' in the sentence.
Example Output: 0

Example Input: Sentence: 'several riders on horses following a trail in the mountains'. How many words contain the letter 'f' in the sentence.
Example Output:
1