With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
work
and
dedication
of
hydrographers
such
as
Konstantin
Neupokoev
,
ensured
that
the
service
returned
to
normality
.
The:O
work:O
and:O
dedication:O
of:O
hydrographers:O
such:O
as:O
Konstantin:person-other
Neupokoev:person-other
,:O
ensured:O
that:O
the:O
service:O
returned:O
to:O
normality:O
.:O