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

[Q]: Sentence: 'a woman in a wheelchair is about to play tennis'. How many words contain the letter 'r' in the sentence.
[A]: 1


[Q]: Sentence: 'there are some warning signs on a public toilet'. How many words contain the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a traffic light with a misty mountain in the backdrop'. How many words contain the letter 'j' in the sentence.
[A]:
0