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.

[Q]: Sentence: 'there is a group of people with horses and a wagon'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a boy in a red baseball uniform throws a ball'. How many words start with the letter 'b' in the sentence.
[A]: 3


[Q]: Sentence: 'a dog laying on its back on a bed'. How many words start with the letter 'a' in the sentence.
[A]:
2