Who invented the practical light bulb?
who invented the practical light bulb
FreebaseQA-train-11735.P0 FreebaseQA-train-11735.P1
light bulb light bulb
incandescent light bulb incandescent light bulb
m.0cpk7 m.0cpk7
law.invention.inventor law.us_patent.inventor
m.07bty
thomas edison
m.07bty
thomas edison