In this task, you need to replace a letter in the sentence with another given letter.

Example Input: Sentence: 'a hand holding part of a sponge with scissors nearby'. Replace the letter 'o' with 'e' in the sentence.
Example Output: a hand helding part ef a spenge with scissers nearby

Example Input: Sentence: 'a kitchen in the midst of renovation is missing it's back-splash and lower cabinetry doors and drawers'. Replace the letter 'a' with 'g' in the sentence.
Example Output: g kitchen in the midst of renovgtion is missing it's bgck-splgsh gnd lower cgbinetry doors gnd drgwers

Example Input: Sentence: 'a pair of giraffes walk across grass in front of trees'. Replace the letter 'i' with 'b' in the sentence.
Example Output:
a pabr of gbraffes walk across grass bn front of trees