3.4 Magnets attract and repel each other, and magnets attract certain kinds of other materials (e.g., iron).
(3.4 Magnets; attract; ) (3.4 Magnets; repel; each other) (magnets; attract; certain kinds of other materials)
3.4 Magnets 3.4 Magnets magnets
attract repel attract
each other
certain kinds of other materials