In another challenge, a bowl of solids, including iron filings, sand, salt and pepper, were presented, and students had to separate them using only a magnet, some water and a funnel.
(a bowl of solids, including iron filings, sand, salt and pepper; were presented; L:In another challenge) (students; to separate; them) Context(students to separate,List([107, 131))):(students; to separate them using; only a magnet, some water and a funnel)
students to separate,List([107, 131))
a bowl of solids, including iron filings, sand, salt and pepper students students
were presented to separate to separate them using
L:In another challenge
them
only a magnet, some water and a funnel