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 ":".
Gonzalez
lobbied
for
the
Chiefs
to
keep
Tyler
Thigpen
as
the
team
's
starting
quarterback
when
Gonzalez
was
still
with
the
team
and
when
Matt
Cassel
was
not
yet
on
the
Chiefs
roster
.
Gonzalez:person-athlete
lobbied:O
for:O
the:O
Chiefs:O
to:O
keep:O
Tyler:person-athlete
Thigpen:person-athlete
as:O
the:O
team:O
's:O
starting:O
quarterback:O
when:O
Gonzalez:person-athlete
was:O
still:O
with:O
the:O
team:O
and:O
when:O
Matt:person-athlete
Cassel:person-athlete
was:O
not:O
yet:O
on:O
the:O
Chiefs:O
roster:O
.:O