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 man eating a giant slice of pizza over a table'. How many words start with the letter 'o' in the sentence.
[A]: 2


[Q]: Sentence: 'a group of four skiers are getting ready to embark'. How many words start with the letter 'g' in the sentence.
[A]: 2


[Q]: Sentence: 'a man sitting in a living room next to other people'. How many words start with the letter 'r' in the sentence.
[A]:
1