Sales is mostly about moving a process forward, so your only goal is to get to the next step.
If the VC isn't a full partner, your next step is to get to a meeting with a partner.
If the VC is a full partner, you want to ask, ``what's the process you use to decide on investments''. Usually, there's a dance of customer-validation meetings that precedes a ``partner meeting'', the outcome of which is a term sheet. So you want to chart out the state machine that terminates in a partner meeting, and then transit from state 0 towards that meeting.