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

Example Input: Sentence: 'a group of people cooking pancakes in the field'. How many words contain the letter 'g' in the sentence.
Example Output: 2

Example Input: Sentence: 'the two people are in wetsuits in the ocean while one rides a wave'. How many words contain the letter 'd' in the sentence.
Example Output: 1

Example Input: Sentence: 'the bridge overpasses the water and leads to several tall buildings'. How many words contain the letter 'i' in the sentence.
Example Output:
2