A captain checks the life vests of his passengers.
A captain inspects life jackets on is passengers.
Life vest is a rephrase of life jackets.
exists e1 x1 x2 x3 x4.(n_passenger(x4) & of(x4,x2) & n_male(x2) & n_vest(x2) & of(x2,x3) & n_life(x3) & Theme(e1,x2) & Actor(e1,x1) & v_check(e1) & of(x2,x4) & n_captain(x1))
exists e1 p1 x1.(exists p2 s1 x2 x3 x4.(exists x5.((x2 = x5) & n_passenger(x5)) & Theme(s1,x4) & a_on(s1) & (x2 = x4) & n_jacket(x2) & of(x2,x3) & n_life(x3)) & Topic(e1,p1) & Actor(e1,x1) & v_inspect(e1) & n_captain(x1))