Can anyone here explain how Question4, iii in the tut was arrived at? It almost seems arbitrary
Is the universe extracted from the clausal form or from the original ?
Why was iii a,b,c instead of f(a) ?
When looking at resolution and hoping to arrive at a . Is it acceptable to arrive at  early ? i.e. if i get there in 2 steps, do i need to continue or can i decide then that its not satisfiable because i was able to reach a  ?
(1) The Herbrand Universe is a list of the constants and the functions (with all possible elements being possible assigments to the function). Since iii has no functions you just list the three constants.