With no explanation, label each line with "building-other", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Designed
by
AECL
for
CANDU
reactor
support
,
the
unit
saw
first
criticality
on
7
September
1960
.
Designed:O
by:O
AECL:organization-company
for:O
CANDU:building-other
reactor:O
support:O
,:O
the:O
unit:O
saw:O
first:O
criticality:O
on:O
7:O
September:O
1960:O
.:O