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 man and luggage carts outside of an airplane'. How many words start with the letter 'o' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a woman in a white tshirt and black pants skiing down a small hill'. How many words start with the letter 'd' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a corner with some shelves that is cluttered with items'. How many words start with the letter 'i' in the sentence.
[EX A]:
2