Two men in white t-shirts and tool belts sit on frame work for a structure.
Two men sit.
The phrase "two men sit" is just re-stating the number of men, two and what they are doing, sitting.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(for(e1,x8) & n_structure(x8) & on(e1,x6) & n_work(x6) & of(x6,x7) & n_frame(x7) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & subset_of(x4,x2) & n_belt(x4) & of(x4,x5) & n_tool(x5) & subset_of(x3,x2) & n_t-shirt(x3) & a_white(s1) & Theme(s1,x3) & n_man(x1) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))