A man is sitting at a table, working with a machine of some sort.
A man is eating lunch in the local diner.
A man sitting at a table doesn't mean he's eating lunch.
exists e1 e2 x1 x2 x3 x4.(for(e1,e2) & with(e2,x3) & of(x3,x4) & n_sort(x4) & n_machine(x3) & Actor(e2,x1) & v_work(e2) & at(e1,x2) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists p1 s2 x1 x3.(n_diner(x3) & a_local(s2) & Theme(s2,x3) & exists s1 x2.((x1 = x2) & in(x2,x3) & n_lunch(x2) & a_eating(s1) & Theme(s1,x2)) & n_man(x1))