With no explanation, label each line with "O", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
exhibited
regularly
at
the
Royal
Academy
,
the
Royal
Portrait
Society
and
abroad
.
He:O
exhibited:O
regularly:O
at:O
the:O
Royal:organization-education
Academy:organization-education
,:O
the:organization-education
Royal:organization-education
Portrait:organization-education
Society:organization-education
and:O
abroad:O
.:O