OWL and OWL-S Profile

Hi everybody, 
 I attached my ontology that I created using Protégé and also a picture that
represents my model. Actually my model represents a competition process for
public markets which has the works that can be done in a public building or
inside an office.

I put three examples of instances here. What I want to do is to say that
each work instance is a web service. Thus "installPlugs" will be a web
service, "paintArea" another one. What I wanted to do is making a reference
to "installPlugs" and say that this installPlugs is a web service profile
(owl-s) and than I will put the IOPE in owl-s. Is it possible? If yes, how
can I do that? 

<Work rdf:ID="installPlugs">
    <owl:sameAs>
      <Work rdf:ID="installCurrent">
        <descWork
rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Install the current
in a building/office</descWork>
        <idWork
rdf:datatype="http://www.w3.org/2001/XMLSchema#string">T4</idWork>
        <idWorkType
rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CE1</idWorkType>
        <owl:sameAs rdf:resource="urn:eg#installPlugs"/>
      </Work>
    </owl:sameAs>
    <descWork rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Install
Plugs</descWork>
    <idWork
rdf:datatype="http://www.w3.org/2001/XMLSchema#string">T5</idWork>
    <idWorkType
rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CE1</idWorkType>
  </Work>


 <Work rdf:ID="paintArea">
    <idWorkType
rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CE5</idWorkType>
    <descWork rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Paint
Area</descWork>
    <idWork
rdf:datatype="http://www.w3.org/2001/XMLSchema#string">T1</idWork>
  </Work>


Another question is about the model, any comments are welcome. The class
WorkCompetitionProcess is an entity that results from a relationship between
Work and CompetitionProcess. 

Thank you. 
Daniela