When you are looking to return the value of a disqualification question in TCC the below code will work.  This is out of transitions.

<quer:projection id="idAuthToWorkUS" alias="UWH_LEGALLY_AUTH" xmlns:quer="http://www.taleo.com/ws/integration/query">
  <quer:query projectedClass="Candidate" alias="AuthToWork">
    <quer:projections>
      <quer:projection alias="idAuth_To_Work_US">
        <quer:field path="ProfileInformation,Candidate,QuestionAnswers,Answer,Description"/>
      </quer:projection>
    </quer:projections>
    <quer:filterings>
      <quer:filtering>
        <quer:equal>
          <quer:field path="ProfileInformation,Candidate,QuestionAnswers,Question"/>
          <quer:string>5053</quer:string>
        </quer:equal>
      </quer:filtering>
      <quer:filtering>
        <quer:equal>
          <quer:field path="Number"/>
          <quer:field ownerQuery="MainQuery" path="ProfileInformation,Candidate"/>
        </quer:equal>
      </quer:filtering>
    </quer:filterings>
  </quer:query>
</quer:projection>