instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a man hitting a tennis ball with a tennis racquet'. Find frequency of the letter 't'
answer:
6


question:
Sentence: 'four men standing around two pizzas in a conference room'. Find frequency of the letter 't'
answer:
2


question:
Sentence: 'bowls of food sitting side by side on a tabel'. Find frequency of the letter 'd'
answer:

3