With no explanation, label each line with "O", "location-road/railway/highway/transit", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
By
August
1972
she
was
sufficiently
regarded
to
be
one
of
the
first
Chinese
to
ceremonially
ride
through
the
Cross-Harbour
Tunnel
on
its
opening
day
.
By:O
August:O
1972:O
she:O
was:O
sufficiently:O
regarded:O
to:O
be:O
one:O
of:O
the:O
first:O
Chinese:O
to:O
ceremonially:O
ride:O
through:O
the:O
Cross-Harbour:location-road/railway/highway/transit
Tunnel:location-road/railway/highway/transit
on:O
its:O
opening:O
day:O
.:O