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
the
eastern
U.S
.
,
tall
dams
are
less
common
because
of
the
lesser
vertical
relief
.
In:O
the:O
eastern:O
U.S:location-GPE
.:location-GPE
,:O
tall:O
dams:O
are:O
less:O
common:O
because:O
of:O
the:O
lesser:O
vertical:O
relief:O
.:O