A couple walking the beach together probably remembering good times.
A couple is taking a walk on the beach and talking.
Walking is the same as taking a walk, and the way that people are remembering good times together assumes that they are talking.
exists e1 e2 s1 s2 s3 x1 x2 x3 x4.(n_beach(x3) & a_topic(x1) & for(e1,e2) & Theme(e2,x4) & Actor(e2,x2) & v_remember(e2) & n_time(x4) & a_good(s3) & Theme(s3,x4) & a_probably(s2) & Manner(e1,s2) & a_together(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_couple(x1))
exists e1 e2 x1 x2 x3 x4.(n_beach(x3) & Actor(e2,x4) & v_talking(e2) & n_couple(x4) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_walk(x2) & n_couple(x1))