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

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: 'a woman sitting on top of a cement bench near a lake'. How many words contain the letter 'w' in the sentence.
Example Output: 1

Example Input: Sentence: 'a surfer in a black wet suit riding a wave in the ocean'. How many words contain the letter 'x' in the sentence.
Example Output:
0