Several workers brace a large yellow object aboard a boat with the Golden Gate bridge in the background.
They are about to start construction.
Just because  workers brace a large yellow object aboard a boat, it cannot be inferred that they are about to start a construction.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(n_background(x7) & n_bridge(x4) & (x4 = x6) & ne_org_gate(x6) & (x4 = x5) & ne_org_golden(x5) & Theme(e1,x2) & Actor(e1,x1) & v_brace(e1) & aboard(x2,x3) & with(x3,x4) & in(x4,x7) & n_boat(x3) & n_object(x2) & a_yellow(s3) & Theme(s3,x2) & a_large(s2) & Theme(s2,x2) & n_worker(x1) & a_several(s1) & Theme(s1,x1))
exists p1 s1 x1.(n_thing(x1) & Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_start(e1) & n_construction(x2)))