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

Sentence: 'a street side tree is filled with candles, teddy bears and balloons'. Replace the letter 'e' with 'c' in the sentence.
a strcct sidc trcc is fillcd with candlcs, tcddy bcars and balloons

Sentence: 'a table full of various types of cellphones, pdas and pagers'. Replace the letter 's' with 'f' in the sentence.
a table full of variouf typef of cellphonef, pdaf and pagerf

Sentence: 'three bags are shown, including a blue piece of luggage and two purses'. Replace the letter 'g' with 'n' in the sentence.
three bans are shown, includinn a blue piece of lunnane and two purses