With no explanation, label each line with "O", "person-athlete", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
was
the
third-string
quarterback
behind
Rich
Gannon
and
Bobby
Hoying
.
He:O
was:O
the:O
third-string:O
quarterback:O
behind:O
Rich:person-athlete
Gannon:person-athlete
and:O
Bobby:person-athlete
Hoying:person-athlete
.:O