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: 'a living room with hd tv chair and decorations'. How many words start with the letter 'r' in the sentence.
[A]: 1


[Q]: Sentence: 'a couple of giraffes that are walking around'. How many words start with the letter 'c' in the sentence.
[A]: 1


[Q]: Sentence: 'a series of photos of a man doing a trick on a skateboard'. How many words start with the letter 'o' in the sentence.
[A]:
3