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 man touching a bird on top of a cage'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'an older airplane flies over the country side'. How many words start with the letter 'o' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a woman laying in bed next to a doorway'. How many words start with the letter 'b' in the sentence.
[EX A]:
1