A swimmer doing a flip in the air.
A person performing acrobats in water.
Swimmer is a person and flip in air is acrobats
exists e1 x1 x2 x3 x4.(n_air(x4) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & in(x3,x4) & n_flip(x3) & (x1 = x2) & n_swimmer(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_water(x4) & Theme(e1,x3) & Actor(e1,x2) & v_perform(e1) & n_acrobat(x3) & (x1 = x2) & n_person(x1))