With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
After
the
split
between
the
two
branches
,
their
development
is
thought
to
have
occurred
in
relative
isolation
.
After:O
the:O
split:O
between:O
the:O
two:O
branches:O
,:O
their:O
development:O
is:O
thought:O
to:O
have:O
occurred:O
in:O
relative:O
isolation:O
.:O