With no explanation, label each line with "O", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Leitch
died
at
the
end
of
June
1990
.
Leitch:person-scholar
died:O
at:O
the:O
end:O
of:O
June:O
1990:O
.:O