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<http://webisa.webdatacommons.org/prov/171918084>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/339792572> .
<http://webisa.webdatacommons.org/339792572>	<http://www.w3.org/ns/prov#value>	"d.Practicing in front of people who ???don???t depend on you for food,??? advised Levin, is the best way to get an unbiased opinion of how the speech is going to turn out.Good introductions are a large part of establishing a speaker???s credibility." .
<http://webisa.webdatacommons.org/339792572>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<americanbar.org> .