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

Sentence: 'a large elephant standing outside beside a tree'. Replace the letter 'e' with 'y' in the sentence.
a largy ylyphant standing outsidy bysidy a tryy

Sentence: 'two tennis players shaking hands over the net'. Replace the letter 'n' with 'f' in the sentence.
two teffis players shakifg hafds over the fet

Sentence: 'several brown and white teddy bears are displayed'. Replace the letter 'a' with 'h' in the sentence.

severhl brown hnd white teddy behrs hre displhyed