We test water and measure pollutants to make sure the water is safe.
(the water; is; safe) (We; test; water and measure pollutants; to make sure the water is safe) Context(We test,List([0, 7))):(We; test water and measure pollutants to make; sure the water is safe)
We test,List([0, 7))
the water We We
is test test water and measure pollutants to make
safe
water and measure pollutants to make sure the water is safe
sure the water is safe