With no explanation, label each line with "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
is
equivalent
to
the
Milk
River
Formation
and
Pakowki
Formation
.
It:O
is:O
equivalent:O
to:O
the:O
Milk:location-bodiesofwater
River:location-bodiesofwater
Formation:location-bodiesofwater
and:O
Pakowki:location-bodiesofwater
Formation:location-bodiesofwater
.:O