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 train traveling through a tunnel on a model track'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'young lady holding an umbrella while standing at a pond'. How many words start with the letter 'y' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a traffic light sitting in the sand on the beach'. How many words start with the letter 't' in the sentence.
[EX A]:
3