With no explanation, label each line with "art-writtenart", "O", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "building-airport" or "building-hospital" preceded by ":".
The
first-century
naturalist
Pliny
the
Elder
described
both
type
of
onyx
and
various
artificial
treatment
techniques
in
his
``
Naturalis
Historia
``
.
The:O
first-century:O
naturalist:O
Pliny:person-scholar
the:person-scholar
Elder:person-scholar
described:O
both:O
type:O
of:O
onyx:O
and:O
various:O
artificial:O
treatment:O
techniques:O
in:O
his:O
``:O
Naturalis:art-writtenart
Historia:art-writtenart
``:O
.:O