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.

[Q]: Sentence: 'a bus and a truck are pictured driving on a street'. How many words start with the letter 'a' in the sentence.
[A]: 5


[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.
[A]: 1


[Q]: Sentence: 'there is a female surfer riding a very small wave'. How many words start with the letter 'i' in the sentence.
[A]:
1