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: 'cars and a motorcycle waiting at an intersection'. How many words start with the letter 'a' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a young woman is posing on a wooden table'. How many words start with the letter 'w' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a bed in a bedroom between two lamps'. How many words start with the letter 'b' in the sentence.
[EX A]:
3