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.
--------
Question: Sentence: 'several people watch cars drive by with bikes on them'. How many words start with the letter 'b' in the sentence.

Answer: 2


Question: Sentence: 'a group of people sitting at a long table in  a wine cellar'. How many words start with the letter 'a' in the sentence.

Answer: 4


Question: Sentence: 'a woman at the beach holding an open umbrella'. How many words start with the letter 'b' in the sentence.

Answer:
1