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 photoshopped image of a nude woman on a bed'. How many words start with the letter 'w' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a clock tower in front of a dark sky'. How many words start with the letter 'f' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'people on top of a ski slope while others are skiing down'. How many words start with the letter 'o' in the sentence.
[EX A]:
3