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 on a cell phone next to a woman'. How many words start with the letter 'n' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a bed sitting next to a window with a wooden headboard'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'an upward looking photograph looking through a disc into the trees and sunshine'. How many words start with the letter 'i' in the sentence.
[EX A]:
1