In this task, you need to count the number of times the given letter appears in the given sentence.

Q: Sentence: 'person wearing all white leaned up against a wall with a yellow sign'. Find frequency of the letter 'a'

A: 8
****
Q: Sentence: 'a group of people standing around a table filled with assorted electronic devices'. Find frequency of the letter 'w'

A: 1
****
Q: Sentence: 'many men from the armed services are gathered'. Find frequency of the letter 'a'

A:
4
****