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 person on skis goes across a snowy slope'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a bird is drinking out of a red dish'. How many words start with the letter 'a' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'two couples sit on a bench in front of bushes with pink flowers'. How many words start with the letter 'o' in the sentence.
[EX A]:
2