A woman chats on the phone while finishing pumping gas.
A woman is talking on the phone.
Chats is another word for talking.
exists e2 e1 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_phone(x2) & on(e1,x2) & Actor(e1,x1) & v_talk(e1) & n_woman(x1))