A teenage boy with a red hat sits along side a pedestrian bridge while people walk by.
The boy is alone in his house.
He is not alone if he when people are walking by. In addition, being in his house versus along side a bridge are different locations.
exists e2 e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(while(e1,x6) & a_by(s3) & Manner(e2,s3) & Theme(e2,x7) & v_walk(e2) & (x6 = x7) & n_people(x6) & along(e1,x5) & n_side(x5) & Theme(e1,x4) & Actor(e1,x1) & v_sit(e1) & n_bridge(x4) & a_pedestrian(s2) & Theme(s2,x4) & with(x1,x3) & n_hat(x3) & a_red(s1) & Theme(s1,x3) & n_boy(x1) & of(x1,x2) & n_teenage(x2))
exists s1 x1 x2.(n_house(x2) & of(x2,x1) & n_male(x1) & n_boy(x1) & in(s1,x2) & Theme(s1,x1) & a_alone(s1))