A waitress is performing in a restaurant with her arms spread out and a top hat in her left hand.
The waitress is at work.
The fact that a waitress is performing doesn't imply that she is at work.
exists e2 e1 p1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(with(e1,x3) & subset_of(x6,x3) & in(x6,x7) & n_hand(x7) & a_left(s2) & Theme(s2,x7) & of(x7,x1) & n_female(x1) & n_female(x1) & n_hat(x6) & a_top(s1) & Theme(s1,x6) & subset_of(x4,x3) & exists s3.(Theme(s3,x5) & a_out(s3)) & Recipient(e2,p1) & Topic(e2,x5) & v_spread(e2) & (x4 = x5) & n_arm(x4) & of(x4,x1) & in(e1,x2) & n_restaurant(x2) & Actor(e1,x1) & v_perform(e1) & n_waitress(x1))
exists p1 x1.(n_waitress(x1) & exists x2.(at(x1,x2) & n_work(x2)))