For example, students found that recycling aluminum cans saves energy, but plastic production is already highly energy-efficient.
(plastic production; is; T:already; highly energy-efficient) (students; found; that recycling aluminum cans saves energy) Context(students found,List([13, 27))):(recycling aluminum cans; saves; energy)
students found,List([13, 27))
plastic production students recycling aluminum cans
is found saves
T:already highly energy-efficient
that recycling aluminum cans saves energy
energy