Three men observe a specimen under a microscope.
Three tall men
Men of all sizes, short and tall, use microscopes.
exists e1 x1 x2 x3.(under(e1,x3) & n_microscope(x3) & Theme(e1,x2) & Actor(e1,x1) & v_observe(e1) & n_specimen(x2) & n_man(x1) & card_eq_3(x1))
exists s1 x1.(n_man(x1) & a_tall(s1) & Theme(s1,x1) & card_eq_3(x1) & a_topic(x1))