For example, magnets are able to attract iron screws by their magnetic fields if the iron is sufficiently close to the magnet.
(magnets; are; able to attract iron screws by their magnetic fields) (magnets; to attract; iron screws) (the iron; is; sufficiently close to the magnet)
magnets magnets the iron
are to attract is
able to attract iron screws by their magnetic fields
iron screws
sufficiently close to the magnet