At 80 he was still cold.
( ( At 80 ) ( he ( ( ( was still ) cold ) . ) ) )
(ROOT (S (PP (IN At) (NP (CD 80))) (NP (PRP he)) (VP (VBD was) (ADVP (RB still)) (ADJP (JJ cold))) (. .)))
He was cold since he was 60.
( He ( ( ( was cold ) ( since ( he ( was 60 ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD was) (ADJP (JJ cold)) (SBAR (IN since) (S (NP (PRP he)) (VP (VBD was) (NP (CD 60)))))) (. .)))