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: 'pair of one kind of birds and another bird perched on a railing'. How many words contain the letter 'j' in the sentence.
Example Output: 0

Example Input: Sentence: 'a bowl of soup with a sandwich sits on a plate'. How many words contain the letter 'i' in the sentence.
Example Output:
3