<?xml version="1.0" encoding='ISO-8859-1'?>

<!-- DTD for a single TREC video topic -->

<!-- A video topic has the following structure:
       textDescription must occur exactly once
       video/image/audioExamples can occur 0 or more times
       knownItem can occur 0 or more times -->
<!ELEMENT videoTopic
(textDescription,videoExample*,imageExample*,audioExample*,knownItem*)>

<!-- A topic is designed to be suitable for interactive processing 
           (Yes or No)
     A topic is designed to be suitable for fully automatic processing 
           (Yes or No)
     A topic is designed so that there is only a small
     set of relevant clips within the test collection
     and which are specified as part of the topic
           (Yes or No)-->      
<!ATTLIST videoTopic          num         CDATA     #REQUIRED
                              interactive (Y-I|N-I) #REQUIRED 
                              automatic   (Y-A|N-A) #REQUIRED 
                              knownItems  (Y-K|N-K) #REQUIRED>


<!-- Brief description of the information need described by the
     topic. This will at least be used by human assessors in
     determining the relevance to result clips to the topic -->
<!ELEMENT textDescription     EMPTY >
<!ATTLIST textDescription     text   CDATA #REQUIRED>


<!-- Video clip example of the information needed -->

<!-- In all of the xxxExample elements:
          src -  will in most cases be the simple name of a file in the     
                 NIST, OpenVideo, or BBC stockshot test collection without   
                 reference to its directory location. Files from outside
                 the test collection will be referenced as "extra/FILENAME".
                 The URL to be used in retrieving a local copy of the file
                 will be preserved in a preceding comment.
   start,stop -  will be one or more pairs of integer or a real number 
                 followed by one of the following: "h" for hours, "m" for 
                 minutes,"s" seconds or "ms" for milliseconds, indicating 
                 the offset from the start of the clip's DISPLAY timeline
                 "start", if not specified, will default to the beginning of
                 the src file. "stop", if not specified, will default to the
                 end of the src file. 
-->
<!ELEMENT videoExample        EMPTY>
<!ATTLIST videoExample        src    CDATA #REQUIRED
                              start  CDATA "0h0m0s0ms"
                              stop   CDATA "END">


<!-- Image example of the information needed -->
<!ELEMENT imageExample        EMPTY>
<!ATTLIST imageExample        src    CDATA #REQUIRED> 


<!-- Audio example of the information needed -->
<!ELEMENT audioExample        EMPTY>
<!ATTLIST audioExample        src    CDATA #REQUIRED
                              start  CDATA "0h0m0s0ms"
                              stop   CDATA "END">


<!-- References to any clips known to meet the information need
     iff knownItems == Y-K above -->
<!ELEMENT knownItem           EMPTY>
<!ATTLIST knownItem           src    CDATA #REQUIRED 
                              start  CDATA "0h0m0s0ms" 
                              stop   CDATA "END">