French justice minister Rachida Dati is trying to stop her convicted drug-trafficker brother from publishing a no-holds-barred book which she fears will reveal the identity of her baby's father. Jamal Dati intends to lift the lid on his famous sister's private life in the revealing family biography to go on sale later this year. The glamorous politician triggered a frenzy of media speculation after refusing to reveal who fathered baby Zohra, who was born last January.
Dati's brother knows who the baby's father is
This statement is definitely correct, because Dati would not be afraid of her brother revealing the secret if he did not know it. The system may not have considered this. 
( z1 know :ARG0 ( z2 person :ARG0-of ( z3 have-rel-role :ARG1 ( z4 person :name ( z5 name :op "Dati" ) ) :ARG2 ( z6 brother ) ) ) )