With no explanation, label each line with "O", "organization-sportsleague", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
1993
,
he
represented
his
father-in-law
Billy
Sullivan
in
his
lawsuit
against
the
NFL
.
In:O
1993:O
,:O
he:O
represented:O
his:O
father-in-law:O
Billy:person-other
Sullivan:person-other
in:O
his:O
lawsuit:O
against:O
the:O
NFL:organization-sportsleague
.:O