With no explanation, label each line with "O", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
empirical
methodology
he
developed
proved
to
be
extraordinarily
accurate
for
its
day
and
was
still
in
use
at
the
time
of
Copernicus
and
Kepler
.
The:O
empirical:O
methodology:O
he:O
developed:O
proved:O
to:O
be:O
extraordinarily:O
accurate:O
for:O
its:O
day:O
and:O
was:O
still:O
in:O
use:O
at:O
the:O
time:O
of:O
Copernicus:person-scholar
and:O
Kepler:person-scholar
.:O