Task and Method are words included in the Sentence.

Sentence A : This paper introduces a  system for categorizing unknown words . The  system  is based on a  multi-component architecture  where each  component  is responsible for identifying one class of  unknown words . The focus of this paper is the  components  that identify  names  and  spelling errors . Each  component  uses a  decision tree architecture  to combine multiple types of  evidence  about the  unknown word . The  system  is evaluated using data from  live closed captions  - a genre replete with a wide variety of  unknown words .
Task : categorizing unknown words, statistical generation
Method : multi-component architecture

Sentence B : A proposal to deal with  French tenses  in the framework of  Discourse Representation Theory  is presented, as it has been implemented for a fragment at the  IMS . It is based on the  theory of tenses  of NAME_1 and NAME_2. Instead of using  operators  to express the  meaning  of the  tenses  the Reichenbachian point of view is adopted and refined such that the impact of the  tenses  with respect to the  meaning  of the  text  is understood as contribution to the integration of the  events  of a  sentence  in the  event structure  of the preceeding  text . Thereby a  system of relevant times  provided by the preceeding  text  and by the  temporal adverbials  of the  sentence  being processed is used. This system consists of one or more  reference times  and  temporal perspective times , the  speech time  and the  location time . The special interest of our proposal is to establish a plausible choice of anchors for the  new event  out of the  system of relevant times  and to update this  system of temporal coordinates  correctly. The problem of choice is largely neglected in the literature. In opposition to the approach of NAME_3 and NAME_4 the exact  meaning  of the  tenses  is fixed by the  resolution component  and not in the process of  syntactic analysis . 

What is Tsak and Method in Sentence B Your entire response should be in English, and in all capital letters.
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