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 ":".
The
solvents
dimethylformamide
and
dimethylacetamide
are
derived
from
dimethylamine
.
The:O
solvents:O
dimethylformamide:other-chemicalthing
and:O
dimethylacetamide:other-chemicalthing
are:O
derived:O
from:O
dimethylamine:other-chemicalthing
.:O