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 ":".
They
were
back
at
it
again
in
2016–17
.
They:O
were:O
back:O
at:O
it:O
again:O
in:O
2016–17:O
.:O