The getting started tutorial <http://docs.jboss.org/hibernate/stable/core/reference/en/html_single/#persistent-classes-dynamicmodels> is reached by:
1. visiting http://www.hibernate.org/
2. clicking "documentation" button <http://www.hibernate.org/docs>
3. choosing any of the three links to the document labeled "reference manual" under the heading "Hibernate Core"
This tutorial is non-functional: the inlined pom.xml does not work (the validation document is unavailable) and there seems to be a problem with maven's inclusion of required slf4j jars.
Steve Ebersole suggested I follow the superior <http://docs.jboss.org/hibernate/core/3.6/quickstart/en-US/html_single/#d0e94> instead. It seems that the more prominent tutorial should be replaced by this more recent (and hopefully correct) one. This might help newcomers avoid the problems I encountered.