Many of us have built electromagnets by wrapping wire around an iron bar and attaching a battery.
(Many of us; have built; electromagnets) Context(Many of us have built,List([0, 21))):(Many of us; have built electromagnets by wrapping; wire; around an iron bar) Context(Many of us have built,List([0, 21))):(Many of us; have built electromagnets attaching; a battery)
Many of us have built,List([0, 21)) Many of us have built,List([0, 21))
Many of us Many of us Many of us
have built have built electromagnets by wrapping have built electromagnets attaching
electromagnets
wire around an iron bar
a battery