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 ":".
In
Paris
,
he
befriended
the
11-year-old
Polish
virtuoso
Apollinaire
de
Kontski
,
giving
him
some
lessons
and
a
signed
testimonial
.
In:O
Paris:location-GPE
,:O
he:O
befriended:O
the:O
11-year-old:O
Polish:location-GPE
virtuoso:O
Apollinaire:person-artist/author
de:person-artist/author
Kontski:person-artist/author
,:O
giving:O
him:O
some:O
lessons:O
and:O
a:O
signed:O
testimonial:O
.:O