A group of people protesting on the sidewalk holding a sign that says "time to break the silence".
The people are outdoors.
People protesting on the sidewalk means that people are outdoors.
exists e3 e1 e2 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 p1 x1.(n_people(x1) & exists x2.((x1 = x2) & n_outdoors(x2)))