instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a group of people are playing soccer on a beach'. Find frequency of the letter 'l'
answer:
2


question:
Sentence: 'a group of people standing around a table filled with assorted electronic devices'. Find frequency of the letter 'w'
answer:
1


question:
Sentence: 'a broken stop sign leaning into the street'. Find frequency of the letter 'k'
answer:

1