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 living room filled with a brown chair and couch'. How many words start with the letter 'c' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a ladder sitting up against a red wall in a room'. How many words start with the letter 'a' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a woman in a white dress and hat holding a tennis racquet'. How many words start with the letter 'a' in the sentence.
[EX A]:
4