A group of children witnessing and participating in a science experiment.
Children sitting down to eat lunch.
The group of children is not eating lunch if they are witnessing and participating in a science experiment.
exists e1 e2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(e2,x5) & n_experiment(x5) & of(x5,x6) & n_science(x6) & Actor(e2,x4) & v_participate(e2) & (x1 = x4) & Actor(e1,x3) & v_witness(e1) & (x1 = x3) & of(x1,x2) & n_child(x2) & n_group(x1))
exists e1 p1 s1 x1 x2.(a_topic(x1) & a_down(s1) & Manner(e1,s1) & Topic(e1,p1) & Actor(e1,x2) & v_sit(e1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_eat(e2) & n_lunch(x3)) & (x1 = x2) & n_child(x1))