It also helps preserve a nonrenewable natural resource when used oil is re-refined into new motor oil.
(It; helps; preserve a nonrenewable natural resource when used) Context(It helps,List([0, 13))):(It; helps preserve; a nonrenewable natural resource; T:when used) Context(It helps,List([0, 13))):(oil; is re-refined; into new motor oil)
It helps,List([0, 13)) It helps,List([0, 13))
It It oil
helps helps preserve is re-refined
preserve a nonrenewable natural resource when used
a nonrenewable natural resource T:when used
into new motor oil