Alternately known as brash, emotional and brilliant, the maverick Kasparov could be a formidable opponent in the realm of politics.
Kasparov is a fabulous opponent in the realm of politics
The text says he could be a great opponent in the realm of politics, it does not say that he is such a thing just yet.
( z1 person :ARG0-of ( z2 oppose ) :mod ( z3 fabulous ) :domain ( z4 person :name ( z5 name :op "Kasparov" ) ) :location ( z6 realm :mod ( z7 politics ) ) )