With no explanation, label each line with "location-GPE", "O", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Green
described
Cherryh
'
s
Russian
series
as
her
``
most
significant
work
of
fantasy
''
.
Green:O
described:O
Cherryh:person-artist/author
':person-artist/author
s:O
Russian:location-GPE
series:O
as:O
her:O
``:O
most:O
significant:O
work:O
of:O
fantasy:O
'':O
.:O