With no explanation, label each line with "O", "building-hospital", "organization-other", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
After
completing
an
internship
in
pediatrics
at
the
Montreal
Children
's
Hospital
(
1970–1971
)
,
he
pursued
postgraduate
training
in
medical
genetics
and
folate
metabolism
at
the
Massachusetts
General
Hospital
under
the
supervision
of
Dr
.
John
Littlefield
and
Dr
.
Richard
Erbe
(
1971–1973
)
,
and
in
biology
at
the
Massachusetts
Institute
of
Technology
under
Malcolm
Gefter
(
1973–1974
)
,
finishing
with
a
residency
in
pediatric
medicine
at
the
Boston
Children
's
Hospital
(
1974–1975
)
.
After:O
completing:O
an:O
internship:O
in:O
pediatrics:O
at:O
the:O
Montreal:building-hospital
Children:building-hospital
's:building-hospital
Hospital:building-hospital
(:O
1970–1971:O
):O
,:O
he:O
pursued:O
postgraduate:O
training:O
in:O
medical:O
genetics:O
and:O
folate:O
metabolism:O
at:O
the:O
Massachusetts:building-hospital
General:building-hospital
Hospital:building-hospital
under:O
the:O
supervision:O
of:O
Dr:O
.:O
John:person-other
Littlefield:person-other
and:O
Dr:O
.:O
Richard:person-other
Erbe:person-other
(:O
1971–1973:O
):O
,:O
and:O
in:O
biology:O
at:O
the:O
Massachusetts:organization-other
Institute:organization-other
of:organization-other
Technology:organization-other
under:O
Malcolm:person-other
Gefter:person-other
(:O
1973–1974:O
):O
,:O
finishing:O
with:O
a:O
residency:O
in:O
pediatric:O
medicine:O
at:O
the:O
Boston:building-hospital
Children:building-hospital
's:building-hospital
Hospital:building-hospital
(:O
1974–1975:O
):O
.:O