With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
1993
,
Yemen
finally
expelled
the
Ethiopian
ships
;
by
then
some
had
deteriorated
too
much
to
be
seaworthy
,
and
the
Ethiopians
left
them
behind
in
Yemen
.
In:O
1993:O
,:O
Yemen:location-GPE
finally:O
expelled:O
the:O
Ethiopian:location-GPE
ships:O
;:O
by:O
then:O
some:O
had:O
deteriorated:O
too:O
much:O
to:O
be:O
seaworthy:O
,:O
and:O
the:O
Ethiopians:location-GPE
left:O
them:O
behind:O
in:O
Yemen:location-GPE
.:O