Many people are outside walking while holding protest signs, the most prominent sign reading "save our schools."
People are protesting anti-marijuana laws.
Someone carrying a sign reading 'save our schools' wouldn't be protesting anti-marijuana laws.
exists e1 e2 p1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(Theme(e2,x7) & Actor(e2,x1) & v_save(e2) & n_school(x7) & of(x7,x1) & n_person(x1) & for(p1,s2) & Time(s2,x6) & n_walking(x6) & Theme(s2,x2) & a_outside(s2) & while(p1,e1) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & subset_of(x4,x3) & n_sign(x4) & n_sign(x4) & a_prominent(s1) & Theme(s1,x4) & r_most(x4) & of(x4,x5) & n_protest(x5) & exists x8.((x2 = x8) & n_reading(x8)) & (x1 = x2) & n_people(x1) & n_quantity(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_protest(e1) & n_law(x2) & a_anti-marijuana(s1) & Theme(s1,x2) & n_people(x1))