. . . "fat man rendition" . "oncoming trolley" . "the Trolley Problem" . . "transplantation" . "Greene's trolley problem." . . . . . "trolley problem experiment" . . "Trolley problem" . "The fat man version" . . . . . . "Trolley Problem" . "The Trolley Problem" . . . . . "trolley-cases" . . . . "trolley problem" . "Trolley problem" . "Trolley problem#Transplant" . . "Trolley problem#Trolley Problem Memes" . "runaway trolley" . "trolley dilemma" . . "Trolley problem#In popular culture" . "Trolley Case" . .