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<Paper uid="P06-2068">
  <Title>The Role of Information Retrieval in Answering Complex Questions</Title>
  <Section position="4" start_page="523" end_page="523" type="intro">
    <SectionTitle>
2 Relationship Questions
</SectionTitle>
    <Paragraph position="0"> Relationship questions represent a new class of information needs formally introduced as a subtask in the NIST-sponsored TREC QA evaluations in 2005 (Voorhees, 2005). Previously, they were the focus of a small pilot study within the AQUAINT program, which resulted in an understanding of a &amp;quot;relationship&amp;quot; as the ability for one object to influence another. Objects in these questions can denote either entities (people, organization, countries, etc.) or events. Consider the following examples: null * Has pressure from China affected America's willingness to sell weaponry to Taiwan?</Paragraph>
  </Section>
class="xml-element"></Paper>