With no explanation, label each line with "location-GPE", "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
At
this
point
the
river
's
western
shore
is
now
in
Quincy
at
the
south
end
of
the
former
Fore
River
Shipyard
.
At:O
this:O
point:O
the:O
river:O
's:O
western:O
shore:O
is:O
now:O
in:O
Quincy:location-GPE
at:O
the:O
south:O
end:O
of:O
the:O
former:O
Fore:location-other
River:location-other
Shipyard:location-other
.:O