School kids have a dance competition.
Kids taking a test at school.
Kids cannot be taking a test while having a dance competition.
exists e1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_competition(x3) & of(x3,x4) & n_dance(x4) & n_kid(x1) & (x1 = x2) & ne_nam_school(x2))
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x4) & n_school(x4) & Theme(e1,x3) & Actor(e1,x2) & v_take(e1) & n_test(x3) & (x1 = x2) & n_kid(x1))