Seam - Popular selectOneMenu com objetos

<h:selectOneMenu value="#{person.occupation}">
  <s:selectItems var="_item" value="#{occupationList}" noSelectionLabel="Select..." label="#{_item.name}"/>
  <s:convertEntity/>
</h:selectOneMenu>

<?xml version="1.0" encoding="UTF-8"?>
<components xmlns="http://jboss.com/products/seam/components"
xmlns:core="http://jboss.com/products/seam/core"
xmlns:persistence="http://jboss.com/products/seam/persistence"
xmlns:transaction="http://jboss.com/products/seam/transaction"
xmlns:security="http://jboss.com/products/seam/security"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=
"http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.2.xsd
http://jboss.com/products/seam/persistence http://jboss.com/products/seam/persistence-2.2.xsd
http://jboss.com/products/seam/transaction http://jboss.com/products/seam/transaction-2.2.xsd
http://jboss.com/products/seam/security http://jboss.com/products/seam/security-2.2.xsd
http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.2.xsd">

<core:manager conversation-timeout="120000"
concurrent-request-timeout="500"
conversation-id-parameter="cid"/>

<transaction:entity-transaction entity-manager="#{em}"/>
<persistence:entity-manager-factory name="lojaPU"/>
<persistence:managed-persistence-context
name="em"
auto-create="true"
entity-manager-factory="#{lojaPU}"/>

<security:identity authenticate-method="#{authenticator.authenticate}"/>
</components>