You will be presented with a citation segment from the section of an NLP research paper, as well as the context surrounding that citation. Classify the intent behind this citation by choosing from one of the following categories:
- Background: provides context or foundational information related to the topic.
- Extends: builds upon the cited work.
- Uses: applies the methods or findings of the cited work.
- Motivation: cites the work as inspiration or rationale for the research.
- CompareOrContrast: compares or contrasts the cited work with others.
- FutureWork: cites the work as a direction for future research.

Your answer should be a single word from the following list of options: ["Background", "Extends", "Uses", "Motivation", "CompareOrContrast", "FutureWork"]. Do not include any other text in your response.

Section Title:
None

Context before the citation:
We have since improved the interface by incorporating a capability in the recognizer to propose additional solutions in turn once the first one fails to parse (Zue et al. 1991) To produce these &quot;N-best&quot; alternatives, we make use of a standard A* search algorithm (Hart 1968, Jelinek 1976). If the parse failed, then the sentence was rejected. A simple word-pair grammar constrained the search space.

Citation Sentence:
We have since improved the interface by incorporating a capability in the recognizer to propose additional solutions in turn once the first one fails to parse ( Zue et al. 1991 ) To produce these `` N-best '' alternatives , we make use of a standard A * search algorithm ( Hart 1968 , Jelinek 1976 ) .

Context after the citation:
Both the A* and the Viterbi search are left-to-right search algorithms. However, the A* search is contrasted with the Viterbi search in that the set of active hypotheses take up unequal segments of time. That is, when a hypothesis is scoring well it is allowed to procede forward, whereas poorer scoring hypotheses are kept on hold. We have thus far developed two versions of the control strategy, a &quot;loosely coupled&quot; system and a &quot;tightly coupled&quot; system.
Uses