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<that> Tag is used in AIML to respond based on the context.

Syntax

<that> template </that>

For example, consider the following conversation.

Human: Hi Alice! What about movies?
Robot: Do you like comedy movies?
Human: No
Robot: Ok! But I like comedy movies.

Example

Create that.aiml inside C > ab > bots > test > aiml and that.aiml.csv inside C > ab > bots > test > aimlif directories.

that.aiml

<?xml version = "1.0" encoding = "UTF-8"?>
<aiml version = "1.0.1" encoding = "UTF-8"?>
   <category>
      <pattern>WHAT ABOUT MOVIES</pattern>
      <template>Do you like comedy movies</template>  
   </category>
   
   <category>
      <pattern>YES</pattern>
      <that>Do you like comedy movies</that>
      <template>Nice, I like comedy movies too.</template>
   </category>
   
   <category>
      <pattern>NO</pattern>
      <that>Do you like comedy movies</that>
      <template>Ok! But I like comedy movies.</template>
   </category> 
   
</aiml>

that.aiml.csv

0,WHAT ABOUT MOVIES,*,*,Do you like comedy movies,that.aiml
0,YES,Do you like comedy movies,*,Nice! I like comedy movies too.,that.aiml
0,NO,Do you like comedy movies,*,Ok! But I like comedy movies.,that.aiml

Execute the Program

Open the command prompt. Go to C > ab > and type the following command −

java -cp lib/Ab.jar Main bot = test action = chat trace = false

Verify the Result

You will see the following output −

Human: What about movies?
Robot: Do you like comedy movies?
Human: No
Robot: Ok! But I like comedy movies.