A teen with a purse squats on a curb.
The girl is waiting for the bus to go to work.
The teen could be a girl or a boy.  Squatting on a curb does not mean waiting for a bus.   The activity could be to go somewhere or return from somewhere.  The ultimate activity may be something other than work.
exists s1 x1 x2 x3.(a_topic(x1) & with(x1,x2) & on(x2,x3) & n_curb(x3) & n_squat(x2) & a_purse(s1) & Theme(s1,x2) & n_teen(x1))
exists e1 p1 x1 x2.(n_bus(x2) & n_girl(x1) & for(e1,x2) & Topic(x2,p1) & exists e2 x3.(to(e2,x3) & n_work(x3) & Actor(e2,x2) & v_go(e2)) & Actor(e1,x1) & v_wait(e1))