<s>
Swordsman	O
was	O
a	O
free-to-play	O
massively	B-Protocol
multiplayer	I-Protocol
online	I-Protocol
role-playing	I-Protocol
game	I-Protocol
(	O
MMORPG	B-Protocol
)	O
by	O
Perfect	O
World	O
Entertainment	O
.	O
</s>
