Query!

Hi,
  Do anyone know a good rdf crawler,please give me one
which should work under linux or windows and if it
works in lisp or java its added advantage for me.
What exactly a rdf crawler does , i mean give the
exact specification of it so that i can write my own.
what is meant by rdf harvesting.
Is jena a open source software?
Do anyone know abt wilbur? if so is there any quering
language supporting wilbur toolkit.

Reply me asap,

Thanx in advance,
bbye.



		
_______________________________
Do you Yahoo!?
Win 1 of 4,000 free domain names from Yahoo! Enter now.
http://promotions.yahoo.com/goldrush