instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'two little girls playing with a bat and a tennis ball'. Find frequency of the letter 'w'
answer:
2


question:
Sentence: 'a person is holding a chocolate doughnut with rainbow sprinkles'. Find frequency of the letter 's'
answer:
4


question:
Sentence: 'a group of people cutting a piece of white and pink cake'. Find frequency of the letter 'd'
answer:

1