Simplify the following text for a Grade 7 native English-speaking person.
Original: Rob Mariano , Rupert Boneham , Colby Donaldson and Jerri Manthey returned to Survivor once again in the show 's 20th season , Survivor : Heroes vs. Villains .
Simplified: Rob Mariano , Rupert Boneham , Jerri Manthey and Colby Donaldson returned in Survivor : Heroes vs. Villains , each on Survivor for a third time .