TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a herd of cattle standing on a lush green field'. Replace the letter 'g' with 'f' in the sentence.

SOLUTION: a herd of cattle standinf on a lush freen field

PROBLEM: Sentence: 'a bowl filled with vegetables and noodles on a table'. Replace the letter 'l' with 'r' in the sentence.

SOLUTION: a bowr firred with vegetabres and noodres on a tabre

PROBLEM: Sentence: 'a stuffed bear with a flower in its hands'. Replace the letter 'i' with 'z' in the sentence.

SOLUTION:
a stuffed bear wzth a flower zn zts hands