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

Ex Input:
Sentence: 'a small child reaching back with a wii remote'. Replace the letter 'l' with 'o' in the sentence.

Ex Output:
a smaoo chiod reaching back with a wii remote


Ex Input:
Sentence: 'a woman sitting on a bench under a gazebo'. Replace the letter 's' with 'u' in the sentence.

Ex Output:
a woman uitting on a bench under a gazebo


Ex Input:
Sentence: 'a bathroom showing a toilet with a towel rack above it'. Replace the letter 'w' with 'g' in the sentence.

Ex Output:

a bathroom shoging a toilet gith a togel rack above it