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

[EX Q]: Sentence: 'group of horses in a field with a pinto in the foreground'. How many words contain the letter 'h' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a bottle of beer and a red plate of food'. How many words contain the letter 'u' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a tennis match with spectators in the stands'. How many words contain the letter 'r' in the sentence.
[EX A]:
1