Note: everthing before first left parenthesis is treated as a comment.
2 objects to be transported

(London PLACE)
(Paris PLACE)
(JFK PLACE)
(r1 ROCKET)
(r2 ROCKET)
(alex CARGO)
(jason CARGO)

(preconds
(at r1 London)
(at r2 London)
(at alex London)
(at jason London)
(has-fuel r1)
(has-fuel r2))


(effects
(at alex Paris)
(at jason JFK))