>> I just need to be able to do something like:
>>
>> SELECT `qid` FROM Wikibase WHERE `Instance Of` = 'Elephant';
>>
>> Using that list and the Wikibase API, I can do processing on my own of the
>> returned data and take it from there.
>
> That is not possible until simple query functionality is finished.

I knew complex queries were not done yet, but I though simple might be.  Its
of no worry though. I can run a nightly job to iterate through all of the
items to build an index of them that is good enough for what I need.