Police officer whistles while he works
The police officer grimaces as he arrests someone.
Someone that grimaces cannot whistle at the same time.
(x)
exists e1 s1 x1 x2 x3.(n_male(x2) & n_grimace(x1) & of(x1,x3) & n_officer(x3) & of(x1,x2) & n_police(x2) & a_someone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_arrest(e1) & as(x1,x2))