The students can separate the iron fillings from the sand or soil by using a permanent magnet.
(The students; can separate; the iron fillings; from the sand or soil) Context(The students can separate,List([0, 25))):(The students; can separate the iron fillings by using; a permanent magnet)
The students can separate,List([0, 25))
The students The students
can separate can separate the iron fillings by using
the iron fillings from the sand or soil
a permanent magnet