After the liquid has evaporated the students observe the resulting precipitate.
(the liquid; has evaporated; the students observe the resulting precipitate) Context(the liquid has evaporated,List([6, 31))):(the students; observe; the resulting precipitate)
the liquid has evaporated,List([6, 31))
the liquid the students
has evaporated observe
the students observe the resulting precipitate
the resulting precipitate