Assertion list for term "produced as byproduct".

Results from Ascent++: 4
elemental sulfur (subgroup of sulfur) ReceivesActionproduced as byproduct 0.67
selenium ReceivesActionproduced as byproduct 0.54
cadmium ReceivesActionproduced as byproduct 0.52
natural gas ReceivesActionproduced as byproduct 0.30