With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Prussian
blue
was
developed
around
1706
.
Prussian:other-chemicalthing
blue:other-chemicalthing
was:O
developed:O
around:O
1706:O
.:O