A woman chats on the phone while finishing pumping gas.
She is talking to her mother.
We are not told that the woman is chatting to her mother.
exists e1 e2 p1 x1 x2.(n_phone(x2) & while(e1,e2) & exists e3 x3.(Theme(e3,x3) & Actor(e3,x1) & v_pump(e3) & n_gas(x3)) & Topic(e2,p1) & Actor(e2,x1) & v_finish(e2) & on(e1,x2) & Actor(e1,x1) & v_chat(e1) & n_woman(x1))
exists e1 x1 x2.(n_mother(x2) & of(x2,x1) & n_female(x1) & n_female(x1) & to(e1,x2) & Actor(e1,x1) & v_talk(e1))