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

[EX Q]: Sentence: 'a line of portable toilets stands outdoors under trees'. How many words contain the letter 'l' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a girl laying on a couch with a bird on her head'. How many words contain the letter 'v' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'the teddy bear has a big bright red bow'. How many words contain the letter 'p' in the sentence.
[EX A]:
0