this is not working in pioyu my chatbot for some reason.
i think i did it right. 

<category>
<pattern>i like *</pattern>

<template>why do you like <star/>.
<think><map name="meaning"><value><star/></value><star/></map><map name="instantiation" value="like"><map name="meaning"><star/></map></map></think>
</template>
</category>


<category>
<pattern>do you like *</pattern>
<template>i do not have a opinion about <star/>.
</template>
</category>

<category>
<pattern>do you like <set>like</set></pattern>
<template>yes i like <star/>.
</template>
</category>