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: 'two women in an arena with a cow'. How many words contain the letter 'u' in the sentence.
[A]: 0


[Q]: Sentence: 'two corned beef sandwiches and a bowl of french fries on a table'. How many words contain the letter 'l' in the sentence.
[A]:
2