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

[EX Q]: Sentence: 'the street corner is flooded deep with water'. How many words contain the letter 'f' in the sentence.
[EX A]: 1

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

[EX Q]: Sentence: 'blue umbrella propped up against a stone pillar'. How many words contain the letter 'p' in the sentence.
[EX A]:
3