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

[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: 'an acoustic guitar is shown laying on a bed'. How many words contain the letter 'l' in the sentence.
[A]: 1


[Q]: Sentence: 'a silver and blue train is on its track'. How many words contain the letter 'b' in the sentence.
[A]:
1