A group of people are protesting something
Some people are happy and sitting quietly.
People protesting something cannot be happy and sitting quietly.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_protest(e1) & n_thing(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(x3) & a_quietly(s2) & Manner(e1,s2) & Actor(e1,x4) & v_sit(e1) & (x3 = x4) & n_people(x3) & a_topic(x1) & Theme(s1,x2) & a_happy(s1) & (x1 = x2) & n_people(x1))