With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
--
Once
established
in
a
position
to
block
,
a
blocker
may
not
move
his
feet
to
re-establish
another
position
as
the
Shooter
moves
around
the
Defender
.
--:O
Once:O
established:O
in:O
a:O
position:O
to:O
block:O
,:O
a:O
blocker:person-other
may:O
not:O
move:O
his:O
feet:O
to:O
re-establish:O
another:O
position:O
as:O
the:O
Shooter:person-other
moves:O
around:O
the:O
Defender:person-other
.:O