paced at a speed that is slow to those of us in middle age and 
(ROOT (S (VP (VBN paced) (PP (IN at) (NP (NP (DT a) (NN speed)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADJP (JJ slow) (PP (IN to) (NP (NP (DT those)) (PP (IN of) (NP (PRP us))) (PP (IN in) (NP (JJ middle) (NN age)))))))))))) (CC and)))
(ROOT (S (VP (VBN ) (PP (IN ) (NP (NP (DT ) (NN )) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (ADJP (JJ ) (PP (IN ) (NP (NP (DT )) (PP (IN ) (NP (PRP ))) (PP (IN ) (NP (JJ ) (NN )))))))))))) (CC )))