instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a boy is doing a trick with his skateboard'. How many words contain the letter 'y' in the sentence.
answer:
1


question:
Sentence: 'martha stewart holding a fluffy siamese cat on her arms'. How many words contain the letter 'a' in the sentence.
answer:
6


question:
Sentence: 'a toy kitchen with small toys preparing food'. How many words contain the letter 'u' in the sentence.
answer:

0