( ( ( Once ( ( that framework ) ( was ( large enough ) ) ) ) ( , ( Lenat reasoned ) ) ) ( , ( ( the computer ) ( ( would ( be ( able ( to ( start ( ( ( ( ( learning ( on ( its own ) ) ) - ) ( for example ) ) , ) ( by ( ( reading and ) conversation ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (S (SBAR (IN Once) (S (NP (DT that) (NN framework)) (VP (VBD was) (ADJP (JJ large) (RB enough))))) (, ,) (NP (NNP Lenat)) (VP (VBD reasoned))) (, ,) (NP (DT the) (NN computer)) (VP (MD would) (VP (VB be) (ADJP (JJ able) (S (VP (TO to) (VP (VB start) (S (VP (VBG learning) (PP (IN on) (NP (PRP$ its) (JJ own))) (: -) (PP (IN for) (NP (NN example))) (, ,) (PP (IN by) (NP (NN reading) (CC and) (NN conversation))))))))))) (. .)))
Once that framework was large enough, Lenat reasoned, the computer would be able to start learning on its own - for example, by reading and conversation.
(ROOT (S (S (VP (VBG Being) (ADJP (JJ able) (S (VP (TO to) (VP (VB read))))))) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (DT a) (JJ learned) (NN trait))))) (. .)))