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: 'several older electronics, including cellular phones and a palm pilot with a broken screen next to each other in white box enclosure'. Replace the letter 'u' with 't' in the sentence.

Ex Output:
several older electronics, incltding celltlar phones and a palm pilot with a broken screen next to each other in white box enclostre

Ex Input:
Sentence: 'tall, slender trees in an underbrush-type area with high grass shows a pair of elephants striding through'. Replace the letter 'n' with 'y' in the sentence.

Ex Output:
tall, sleyder trees iy ay uyderbrush-type area with high grass shows a pair of elephayts stridiyg through