In 1879, he made an electric light bulb that burned for 40 hours.
(he; made; an electric light bulb that burned for 40 hours; T:In 1879) (an electric light bulb; burned; T:for 40 hours)
he an electric light bulb
made burned
an electric light bulb that burned for 40 hours T:In 1879
T:for 40 hours