instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a mixed bouquet of flowers in a glass vase set before a window'. Find frequency of the letter 'w'
answer:
3

question:
Sentence: 'a crowd of people standing in front of a green train'. Find frequency of the letter 'g'
answer:
2

question:
Sentence: 'a man making a creepy face while wearing a red bow tie'. Find frequency of the letter 'd'
answer:
1