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 girl who is wearing a back pack with a teddy bear in it'. How many words start with the letter 'w' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a photograph of a vase through its glass showcase'. How many words start with the letter 'i' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a residential scene of a house with several signs posted on a pole'. How many words start with the letter 'o' in the sentence.

SOLUTION:
2