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
2014
a
referendum
was
held
asking
voters
in
Scotland
the
question
:
``
Should
Scotland
be
an
independent
country
?
''
In:O
2014:O
a:O
referendum:O
was:O
held:O
asking:O
voters:O
in:O
Scotland:location-GPE
the:O
question:O
::O
``:O
Should:O
Scotland:location-GPE
be:O
an:O
independent:O
country:O
?:O
'':O