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

[Q]: Sentence: 'some people at a table with food and drinks'. How many words contain the letter 'n' in the sentence.
[A]: 2

[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: 'a man and a woman walking with an umbrella and a woman walking with a hood on her head'. How many words contain the letter 'z' in the sentence.
[A]:
0