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 passanger train is coming down the tracks'. How many words start with the letter 't' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'different cars on the streets in a city setting'. How many words start with the letter 'i' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'the girl in the pink cap has a cheese pizza in front of her'. How many words start with the letter 'i' in the sentence.
[EX A]:
2