With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Because
large
conventional
dammed-hydro
facilities
hold
back
large
volumes
of
water
,
a
failure
due
to
poor
construction
,
natural
disasters
or
sabotage
can
be
catastrophic
to
downriver
settlements
and
infrastructure
.
Because:O
large:O
conventional:O
dammed-hydro:O
facilities:O
hold:O
back:O
large:O
volumes:O
of:O
water:O
,:O
a:O
failure:O
due:O
to:O
poor:O
construction:O
,:O
natural:O
disasters:O
or:O
sabotage:O
can:O
be:O
catastrophic:O
to:O
downriver:O
settlements:O
and:O
infrastructure:O
.:O