With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
October
2009
,
it
was
announced
Mesa
Air
Group
's
subsidiary
``
go
!
''
In:O
October:O
2009:O
,:O
it:O
was:O
announced:O
Mesa:organization-company
Air:organization-company
Group:organization-company
's:O
subsidiary:O
``:O
go:O
!:O
'':O