TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a group of sheep is standing in a grassy field'. Replace the letter 'g' with 'p' in the sentence.

SOLUTION: a proup of sheep is standinp in a prassy field

PROBLEM: Sentence: 'a busy intersection with cars moving at night'. Replace the letter 's' with 'f' in the sentence.

SOLUTION: a bufy interfection with carf moving at night

PROBLEM: Sentence: 'two young children sitting at a table eating food'. Replace the letter 'i' with 'h' in the sentence.

SOLUTION:
two young chhldren shtthng at a table eathng food