With no explanation, label each line with "other-disease", "O", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
has
also
investigated
the
regulation
of
ACE2
,
the
receptor
for
SARS-CoV-2
.
He:O
has:O
also:O
investigated:O
the:O
regulation:O
of:O
ACE2:other-biologything
,:O
the:O
receptor:O
for:O
SARS-CoV-2:other-disease
.:O