TASK DEFINITION: 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.
PROBLEM: Sentence: 'a bus and a truck are pictured driving on a street'. How many words start with the letter 'a' in the sentence.

SOLUTION: 5

PROBLEM: Sentence: 'several friends are setting around a dinner table'. How many words start with the letter 's' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a window on brick wall with vases in the sill'. How many words start with the letter 'i' in the sentence.

SOLUTION:
1