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 ":".
Ronald
Lockley
(
1903–2000
)
,
among
many
studies
of
birds
in
over
fifty
books
,
pioneered
the
science
of
bird
migration
.
Ronald:person-scholar
Lockley:person-scholar
(:O
1903–2000:O
):O
,:O
among:O
many:O
studies:O
of:O
birds:O
in:O
over:O
fifty:O
books:O
,:O
pioneered:O
the:O
science:O
of:O
bird:O
migration:O
.:O