An individual dressed in a yellow shirt and camouflage pants is walking down the sidewalk.
A person is walking on the sidewalk.
The words individual and person are synonyms so both sentences are talking about the person walking on the sidewalk.
exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_sidewalk(x7) & a_down(s2) & Manner(e2,s2) & Theme(e2,x7) & Actor(e2,x1) & v_walk(e2) & in(e1,x3) & subset_of(x5,x3) & n_pants(x5) & of(x5,x6) & n_camouflage(x6) & subset_of(x4,x3) & n_shirt(x4) & a_yellow(s1) & Theme(s1,x4) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_individual(x1))
exists e1 x1 x2.(n_sidewalk(x2) & on(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_person(x1))