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 ":".
The
start
of
the
season
was
postponed
due
to
coronavirus
pandemic
.
The:O
start:O
of:O
the:O
season:O
was:O
postponed:O
due:O
to:O
coronavirus:O
pandemic:O
.:O