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: 'car pass threw a green light in the day light'. How many words start with the letter 'd' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a photograph of a vase through its glass showcase'. How many words start with the letter 'i' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a side mirror of a vehicle driving in the road'. How many words start with the letter 'd' in the sentence.
[EX A]:
1