A group of people protesting on the sidewalk holding a sign that says "time to break the silence".
The people protesting are african american.
That people are protesting on the sidewalk does not mean they are African Americans.
exists e2 e3 e1 p1 s1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_silence(x9) & a_''(s1) & Theme(s1,x9) & n_sidewalk(x4) & a_topic(x1) & Theme(e3,x8) & Actor(e3,x7) & v_say(e3) & Topic(x8,p1) & exists e4.(Theme(e4,x9) & Actor(e4,x8) & v_break(e4)) & n_time(x8) & (x1 = x7) & of(x1,x2) & on(e1,x4) & Theme(e2,x6) & Actor(e2,x5) & v_hold(e2) & n_sign(x6) & (x4 = x5) & Actor(e1,x3) & v_protest(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2.(n_people(x1) & r_african(s1) & Theme(s1,x1) & a_american(s1) & Actor(e1,x2) & v_protest(e1) & (x1 = x2))