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

[Q]: Sentence: 'a horse and a donkey stand in a fenced field'. How many words contain the letter 'd' in the sentence.
[A]: 5


[Q]: Sentence: 'a man and a woman stand under an umbrella'. How many words contain the letter 's' in the sentence.
[A]: 1


[Q]: Sentence: 'a snowboarder is riding down a pole and some people'. How many words contain the letter 'y' in the sentence.
[A]:
0