A man cleans a strange device in the middle of a busy urban setting.
A man cleans in the middle of the city.
Sentence 2 is a simplification of sentence 1. both talk about same man who cleans in the middle of a city. (a city is an urban setting)
exists e1 s1 s2 s3 x1 x2 x3 x4.(n_middle(x3) & in(e1,x3) & of(x3,x4) & n_setting(x4) & a_urban(s3) & Theme(s3,x4) & a_busy(s2) & Theme(s2,x4) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & n_device(x2) & a_strange(s1) & Theme(s1,x2) & n_man(x1))
exists x1 x2 x3 x4.(n_city(x4) & n_middle(x3) & a_topic(x1) & in(x1,x3) & of(x3,x4) & n_clean(x1) & of(x1,x2) & n_man(x2))