A man breakdancing in front of young school children.
The man sings in front of the young kids.
A man cannot be breakdancing and sings at the same time.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x3) & of(x3,x4) & n_child(x4) & of(x4,x5) & n_school(x5) & a_young(s1) & Theme(s1,x4) & n_front(x3) & Actor(e1,x2) & v_breakdance(e1) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(n_kid(x3) & a_young(s1) & Theme(s1,x3) & n_man(x1) & in(e1,x2) & of(x2,x3) & n_front(x2) & Actor(e1,x1) & v_sing(e1))