With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Rex
has
a
pet
human
,
who
he
keeps
in
a
cage
,
and
it
transpires
that
the
auxes
all
think
that
Leezee
is
Gene
's
pet
,
since
they
had
no
prior
knowledge
of
humans
.
Rex:person-other
has:O
a:O
pet:O
human:O
,:O
who:O
he:O
keeps:O
in:O
a:O
cage:O
,:O
and:O
it:O
transpires:O
that:O
the:O
auxes:O
all:O
think:O
that:O
Leezee:person-other
is:O
Gene:person-other
's:O
pet:O
,:O
since:O
they:O
had:O
no:O
prior:O
knowledge:O
of:O
humans:O
.:O