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

Input: Consider Input: Sentence: 'a basket holds flowers, twigs, and various fruits'. Replace the letter 'a' with 'g' in the sentence.

Output: g bgsket holds flowers, twigs, gnd vgrious fruits

Input: Consider Input: Sentence: 'a person that is sitting under an umbrella'. Replace the letter 'a' with 'l' in the sentence.

Output: l person thlt is sitting under ln umbrelll

Input: Consider Input: Sentence: 'a table that has two trays of sliced pizza'. Replace the letter 't' with 'w' in the sentence.
Output: a wable whaw has wwo wrays of sliced pizza