In this task, you need to count the number of words in a sentence that start with the given letter. Answer with numbers and not words.

[EX Q]: Sentence: 'a young boy hits a baseball during a game'. How many words start with the letter 'd' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a group of people sitting at a restaurant table'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a hotdog with onions on it is sitting on tinfoil'. How many words start with the letter 'o' in the sentence.
[EX A]:
3