A young boy is kneeling on a white floor next to an orange cloth.
A young man sitting next to an orange cloth cleaning the floor.
"Man" implies an older age than "boy" does, and just because he is kneeling doesn't mean he is cleaning.
exists e1 s1 s2 x1 x2 x3 x4 x5.(on(e1,x2) & to(x3,x4) & n_cloth(x4) & of(x4,x5) & n_orange(x5) & next(x2,x3) & n_thing(x3) & n_floor(x2) & a_white(s2) & Theme(s2,x2) & Actor(e1,x1) & v_kneel(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(n_floor(x6) & a_topic(x1) & to(e1,x3) & Theme(e2,x6) & Actor(e2,x5) & v_clean(e2) & (x3 = x5) & n_cloth(x3) & of(x3,x4) & n_orange(x4) & r_next(e1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))