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

[Q]: Sentence: 'a glass vase with clear glass marbles in it and purple flowers coming out of the vase'. How many words contain the letter 'd' in the sentence.
[A]: 1


[Q]: Sentence: 'man and woman wearing all red standing in a snowy field'. How many words contain the letter 'k' in the sentence.
[A]: 0


[Q]: Sentence: 'two people stand on a snowy mountain snowboards in hand'. How many words contain the letter 'a' in the sentence.
[A]:
5