With no explanation, label each line with "O", "person-athlete", "organization-sportsteam", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
1959
,
McPeak
joined
the
Washington
Redskins
as
an
assistant
under
head
coach
Mike
Nixon
.
In:O
1959:O
,:O
McPeak:person-athlete
joined:O
the:O
Washington:organization-sportsteam
Redskins:organization-sportsteam
as:O
an:O
assistant:O
under:O
head:O
coach:O
Mike:person-athlete
Nixon:person-athlete
.:O