To build her new version of p, Mary could employ a goal-achieving scheme: she keeps comparing p with the latest version of q, and whenever she senses a significant difference, she applies some operation to q that removes or reduces the difference. For example, if Mary notices that p has an Origin pronome where q lacks one, her memory-control system will focus on p's Origin. In this case, if p itself is a motion frame, the usual speech-tactic is to use the word "from."