With no explanation, label each line with "other-livingthing", "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
the
1970s
,
an
estimated
2,000
Chinese
sturgeon
spawned
in
the
Yangtze
River
every
year
.
In:O
the:O
1970s:O
,:O
an:O
estimated:O
2,000:O
Chinese:other-livingthing
sturgeon:other-livingthing
spawned:O
in:O
the:O
Yangtze:location-bodiesofwater
River:location-bodiesofwater
every:O
year:O
.:O