['lesson', 'begin', 'speak', 'EmptyParameter', 'EmptyParameter'] ['lesson', 'speak', 'EmptyParameter', 'culture', 'of']
["Synset('message.n.02')", 'begin-55.1', 'lecture-37.11-1', 'EmptyParameter', 'EmptyParameter'] ["Synset('message.n.02')", 'lecture-37.11-1', 'EmptyParameter', "Synset('state.n.02')", 'of']
His lessons begin to speak of organic cultures.
<PRP> Synset('message.n.02') begin to speak of Synset('organic.a.02') Synset('state.n.02').