<s>
Open	B-Application
Knowledge	I-Application
Base	I-Application
Connectivity	I-Application
(	O
OKBC	B-Application
)	O
is	O
a	O
protocol	O
and	O
an	O
API	B-Application
for	O
accessing	O
knowledge	O
in	O
knowledge	O
representation	O
systems	O
such	O
as	O
ontology	O
repositories	O
and	O
object	B-General_Concept
–	I-General_Concept
relational	I-General_Concept
databases	I-General_Concept
.	O
</s>
<s>
It	O
is	O
somewhat	O
complementary	O
to	O
the	O
Knowledge	B-Language
Interchange	I-Language
Format	I-Language
that	O
serves	O
as	O
a	O
general	O
representation	O
language	O
for	O
knowledge	O
.	O
</s>
