( ( `` ( The ( single fact ) ) ) ( that ( ( atom bombs ) ( are ( ( ( 2,000 times ) ( as powerful ) ) ( as ( ordinary bombs ) ) ) ) ) ) )
(ROOT (FRAG (NP (`` ``) (DT The) (JJ single) (NN fact)) (SBAR (IN that) (S (NP (NN atom) (NNS bombs)) (VP (VBP are) (ADJP (ADJP (QP (CD 2,000) (NNS times)) (RB as) (JJ powerful)) (PP (IN as) (NP (JJ ordinary) (NNS bombs)))))))))
"The single fact that atom bombs are 2,000 times as powerful as ordinary bombs
(ROOT (S (NP (NNP Air)) (VP (VBZ is) (VP (VBN made) (PP (IN of) (NP (NNS atoms))))) (. .)))