['they', 'begin', 'dance', 'EmptyParameter', 'EmptyParameter'] ['they', 'dance', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'begin-55.1', 'performance-26.7', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'modes_of_being_with_motion-47.3', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
They begin to dance better.
<PRP> begin to dance Synset('better.a.01').