[Attempto] Another question about AceWiki

[Changyuan Yu]

Hi,
  I have another question about AceWiki. I have 'apple', 'orange',
'fruit' and 'object' as noun in AceWiki, and also below statements in
AceWiki:

1. 'Every fruit is an object.'
2. 'Every apple is a fruit.'
3. 'Every orange is a fruit.'

How can I ask a question to find out what objects are fruits(upward
hierarchy of 'fruit'), with 'apple' and 'orange' as the answer.