In this task, you need to count the number of times the given letter appears in the given sentence.
--------
Question: Sentence: 'four women around a man sitting in front of a cake'. Find frequency of the letter 'o'

Answer: 5


Question: Sentence: 'an old glass vase containing flowers on a glass table'. Find frequency of the letter 'b'

Answer: 1


Question: Sentence: 'a woman takes a wine break on the kitchen counter'. Find frequency of the letter 't'

Answer:
4