instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a pizza sitting on top of a metal pizza pan'. Replace the letter 'p' with 't' in the sentence.
answer:
a tizza sitting on tot of a metal tizza tan

question:
Sentence: 'a man that is on the back of an elephant'. Replace the letter 'c' with 'd' in the sentence.
answer:
a man that is on the badk of an elephant

question:
Sentence: 'serena williams serving the tennis ball at the tournament'. Replace the letter 'h' with 'k' in the sentence.
answer:
serena williams serving tke tennis ball at tke tournament