premise: The rusty lock is attached to a chain.
hypothesis: A bike is locked up
explanation_1: A chain with a lock may not belong to a bike and so it can't be concluded that a bike is locked up.
premise_logic: exists e1 s1 x1 x2.(n_lock(x1) & a_rusty(s1) & Theme(s1,x1) & to(e1,x2) & n_chain(x2) & Theme(e1,x1) & v_attach(e1))
hypothesis_logic: exists e1 s1 x1.(a_up(s1) & Manner(e1,s1) & Theme(e1,x1) & v_lock(e1) & n_bike(x1))
premise_sim: exists e1 s1 x1 x2.(v_attach(e1) & to(e1,x2) & n_lock(x1) & n_chain(x2) & a_rusty(s1) & Theme(s1,x1) & Theme(e1,x1))
hypothesis_sim: exists e1 s1 x1.(v_lock(e1) & n_bike(x1) & a_up(s1) & Theme(e1,x1) & Manner(e1,s1))