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 ":".
Obermayer
's
reagent
is
a
dilute
solution
FeCl3
in
hydrochloric
acid
.
Obermayer:O
's:O
reagent:O
is:O
a:O
dilute:O
solution:O
FeCl3:other-chemicalthing
in:O
hydrochloric:other-chemicalthing
acid:other-chemicalthing
.:O