With no explanation, label each line with "O", "person-scholar", "other-award", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
In
recognition
of
his
many
discoveries
,
the
American
Society
of
Plant
Physiologists
elected
Dennis
Hoagland
as
president
in
1932
and
awarded
him
the
first
Stephen
Hales
Prize
in
1929
.
In:O
recognition:O
of:O
his:O
many:O
discoveries:O
,:O
the:O
American:organization-education
Society:organization-education
of:organization-education
Plant:organization-education
Physiologists:organization-education
elected:O
Dennis:person-scholar
Hoagland:person-scholar
as:O
president:O
in:O
1932:O
and:O
awarded:O
him:O
the:O
first:O
Stephen:other-award
Hales:other-award
Prize:other-award
in:O
1929:O
.:O