For example, when we turn used paper into pulp to make new paper, crush old glass bottles to make new glass, and melt aluminum cans to 
(we; turn; used paper; into pulp) Context(we turn,List([18, 25))):(we; turn used paper to make; new paper)
we turn,List([18, 25))
we we
turn turn used paper to make
used paper into pulp
new paper