This man studies the controls while working with heavy machinery.
This man studies the controls while working with heavy machinery to earn extra money
Just because a man is working with heavy machinery it does not mean he is trying to earn extra money.
exists e1 e2 s1 x1 x2 x3.(n_control(x2) & n_man(x1) & while(e1,e2) & with(e2,x3) & n_machinery(x3) & a_heavy(s1) & Theme(s1,x3) & Actor(e2,x1) & v_work(e2) & Theme(e1,x2) & Actor(e1,x1) & v_study(e1))
exists e1 e2 p1 s1 x1 x2 x3.(n_control(x2) & n_man(x1) & while(e1,e2) & Topic(e2,p1) & exists e3 s2 x4.(Theme(e3,x4) & Actor(e3,x1) & v_earn(e3) & n_money(x4) & a_extra(s2) & Theme(s2,x4)) & with(e2,x3) & n_machinery(x3) & a_heavy(s1) & Theme(s1,x3) & Actor(e2,x1) & v_work(e2) & Theme(e1,x2) & Actor(e1,x1) & v_study(e1))