A person holds a blow horn while wearing a helmet.
the people are sick and napping
The person that holds a blow horn cannot be napping.
exists e2 e1 x1 x2 x3 x4.(while(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_wear(e2) & n_helmet(x4) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & Time(x2,x3) & n_horn(x3) & n_blow(x2) & n_person(x1))
exists s1 s2 x1.(n_people(x1) & Theme(s2,x1) & a_napping(s2) & Theme(s1,x1) & a_sick(s1))