With no explanation, label each line with "O", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
As
an
enthusiastic
chamber
musician
,
Chen
frequently
collaborates
with
many
great
musicians
.
As:O
an:O
enthusiastic:O
chamber:O
musician:O
,:O
Chen:person-artist/author
frequently:O
collaborates:O
with:O
many:O
great:O
musicians:O
.:O