With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
this
kind
of
united
atom
representation
,
one
typically
eliminates
all
explicit
hydrogen
atoms
except
those
that
have
the
capability
to
participate
in
hydrogen
bonds
(
``
polar
hydrogens
``
)
.
In:O
this:O
kind:O
of:O
united:O
atom:other-chemicalthing
representation:O
,:O
one:O
typically:O
eliminates:O
all:O
explicit:O
hydrogen:other-chemicalthing
atoms:other-chemicalthing
except:O
those:O
that:O
have:O
the:O
capability:O
to:O
participate:O
in:O
hydrogen:other-chemicalthing
bonds:other-chemicalthing
(:O
``:O
polar:other-chemicalthing
hydrogens:other-chemicalthing
``:O
):O
.:O