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

Example Input: Sentence: 'group of horses in a field with a pinto in the foreground'. How many words contain the letter 'h' in the sentence.
Example Output: 3

Example Input: Sentence: 'a small terrier stands in the open suitcase ready to go'. How many words contain the letter 'l' in the sentence.
Example Output: 1

Example Input: Sentence: 'a small terrier stands in the open suitcase ready to go'. How many words contain the letter 'l' in the sentence.
Example Output:
1