What was invented by Elias Howe in 1846 and improved by Isaac Merritt Singer?
what was invented by elias howe in 1846 and improved by isaac merritt singer
FreebaseQA-train-6514.P0 FreebaseQA-train-6514.P1
elias howe isaac merritt singer
elias howe isaac singer
m.023lh1 m.019j60
base.argumentmaps.innovator.original_ideas base.argumentmaps.innovator.original_ideas
m.0llzx
sewing machine
m.0llzx
sewing machine