With no explanation, label each line with "person-athlete", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Sam
Snead
won
his
only
Open
title
,
four
strokes
ahead
of
runners-up
Johnny
Bulla
and
Bobby
Locke
.
Sam:person-athlete
Snead:person-athlete
won:O
his:O
only:O
Open:O
title:O
,:O
four:O
strokes:O
ahead:O
of:O
runners-up:O
Johnny:person-athlete
Bulla:person-athlete
and:O
Bobby:person-athlete
Locke:person-athlete
.:O