Task and Method are words included in the Sentence. Words must be found in sentences, not inventing new words. The same words cannot be used for Task and Method. Task and method are composed of words, and words are separated by commas.

Sentence A : It is often assumed that when  natural language processing  meets the real world, the ideal of aiming for complete and correct interpretations has to be abandoned. However, our experience with  TACITUS  ; especially in the  MUC-3 evaluation  , has shown that principled techniques for  syntactic and pragmatic analysis  can be bolstered with methods for achieving robustness. We describe three techniques for making  syntactic analysis  more robust---an  agenda-based scheduling parser  , a  recovery technique for failed parses  , and a new technique called  terminal substring parsing  . For  pragmatics processing  , we describe how the method of  abductive inference  is inherently robust, in that an interpretation is always possible, so that in the absence of the required  world knowledge  , performance degrades gracefully. Each of these techniques have been evaluated and the results of the evaluations are presented. 
Task : natural language processing, syntactic and pragmatic analysis, syntactic analysis
Method : TACITUS, agenda-based scheduling parser, recovery technique, terminal substring parsing, abductive inference

Sentence B : We present an efficient algorithm for  chart-based phrase structure parsing  of  natural language  that is tailored to the problem of extracting specific information from  unrestricted texts  where many of the  words  are unknown and much of the  text  is irrelevant to the task. The  parser  gains algorithmic efficiency through a  reduction  of its  search space  . As each new  edge  is added to the  chart  , the algorithm checks only the topmost of the  edges  adjacent to it, rather than all such  edges  as in conventional treatments. The resulting  spanning edges  are insured to be the correct ones by carefully controlling the order in which  edges  are introduced so that every final  constituent  covers the longest possible  span  . This is facilitated through the use of  phrase boundary heuristics  based on the placement of  function words  , and by  heuristic rules  that permit certain kinds of  phrases  to be deduced despite the presence of  unknown words  . A further  reduction in the search space  is achieved by using  semantic  rather than  syntactic categories  on the  terminal and non-terminal edges  , thereby reducing the amount of Write exactly 5 paragraphs each separated with two new lines answering this question. The last paragraph must start with "contact".
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