A teacher needs to know that magnetic material (such as iron) can be found in food and soil.
(A teacher; can be found; L:in food and soil) (A teacher; needs; to know that magnetic material (such as iron) Context(A teacher needs,List([0, 15))):(A teacher; needs to know; that magnetic material (such as iron)
A teacher needs,List([0, 15))
A teacher A teacher A teacher
can be found needs needs to know
L:in food and soil
to know that magnetic material (such as iron
that magnetic material (such as iron