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: 'this is a dish of buttered asparagus with dressing'. How many words start with the letter 'o' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'an officer sits on a brown horse on a city street'. How many words start with the letter 'o' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a group of three stuffed teddy bear on a blue couch'. How many words start with the letter 'o' in the sentence.
[EX A]:
2