that were already tired 10 years ago 
(ROOT (S (NP (DT that)) (VP (VBD were) (ADVP (RB already)) (ADJP (JJ tired)) (PP (NP (CD 10) (NNS years)) (RB ago)))))
(ROOT (S (NP (DT )) (VP (VBD ) (ADVP (RB )) (ADJP (JJ )) (PP (NP (CD ) (NNS )) (RB )))))