Welders work in low light conditions underground.
welders work underground
if the welders are working underground then the welders must be working underground.
exists e1 s1 s2 s3 x1 x2.(a_underground(s3) & Manner(e1,s3) & in(e1,x2) & n_condition(x2) & a_light(s2) & Theme(s2,x2) & a_low(s1) & Theme(s1,x2) & Actor(e1,x1) & v_work(e1) & n_welder(x1))
exists e1 s1 x1.(a_underground(s1) & Manner(e1,s1) & Actor(e1,x1) & v_work(e1) & n_welder(x1))