Red objects attract bulls.
Bulls aren't attracted by red objects but moving ones.
Lightning strikes men more often than women.
Men are struck by lightning 5 times more often than women.
The Romans didn't invent Roman letters.
Roman letters weren't invented by Romans but the Etruscans.
I think I will spend this summer.....
I think this summer will be spent....
The scientists placed rats in a maze.
The rats were placed in a maze by scientists to...?
