Who discovered the element Oxygen?
who discovered the element oxygen
FreebaseQA-train-14553.P0 FreebaseQA-train-14553.P1
oxygen oxygen
oxygen oxygen
m.025s6bf m.025s6bf
chemistry.chemical_element.discoverer user.psych0fred.default_domain.discovered_by.person
m.0b0bx
joseph priestley
m.0b0bx
joseph priestley