With no explanation, label each line with "O", "organization-education", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Around
1839
Bolton
became
a
student
of
Morse
at
the
National
Academy
of
Design
.
Around:O
1839:O
Bolton:person-other
became:O
a:O
student:O
of:O
Morse:person-other
at:O
the:O
National:organization-education
Academy:organization-education
of:organization-education
Design:organization-education
.:O