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

Sentence: 'man in blue shirt hitting a tennis ball back'. How many words contain the letter 'q' in the sentence.
0

Sentence: 'a toilet sits in the middle of a street'. How many words contain the letter 'b' in the sentence.
0

Sentence: 'motorcyclist riding down a road with multiple motorcycles parked on the side'. How many words contain the letter 'c' in the sentence.
2