['they', 'begin', 'think', 'EmptyParameter', 'EmptyParameter'] ['they', 'think', 'EmptyParameter', 'minute', 'for']
['<PRP>', 'begin-55.1-1-1', 'focus-87.1', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'focus-87.1', 'EmptyParameter', '<DURATION>1', 'for']
They also begin to think for a minute.
<PRP> also begin to think for <DURATION>1.