With no explanation, label each line with "O", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
has
served
as
President
of
the
National
Physicians
Alliance
since
2016
.
He:O
has:O
served:O
as:O
President:O
of:O
the:O
National:organization-government/governmentagency
Physicians:organization-government/governmentagency
Alliance:organization-government/governmentagency
since:O
2016:O
.:O