A) The lightbulb invented Thomas Edison
B) The lightbulb was invented by Thomas Edison
C) Thomas Edison was invented the lightbulb

A) Gold objects were discovered in my yard
B) Gold objects discovered in my yard
C) My yard discovered gold objects

A) The treasure hidden in the ocean
B) The treasure wasn't hidden in the ocean
C) The treasure was hid in the ocean

A) When were these statues built
B) When the statues was built?
C) When was these statues built?

A) Two mummies were buried in this tomb
B) This tomb buried two mummies
C) two mummies buried in this tomb