These debates are sponsored by the Commission on Presidential Debates. The format and the rules are those negotiated by representatives of the two campaigns. Only the subjects tonight and the questions are mine. The format tonight is that of a conversation.
The representatives of the two campaigns will negotiate the format and rules.
The context tells us that the format and rules are those negotiated by representatives of the two campaigns.
( z1 negotiate :ARG0 ( z2 person :ARG0-of ( z3 represent :ARG1 ( z4 campaign :quant 2 ) ) ) :ARG1 ( z5 and :op ( z6 format ) :op ( z7 rule ) ) )