MIA, Ask an Expert: order of evaluation

[askanexpert@xxxxxxxxxxxxxxxxxxxxxxxxxxxx]

This is an automatic message sent from the web form at:
http://mia.openworldlearning.org/howdoi.htm

from: Benjamin Engelsberg <bendaxis@xxxxxxxxx>
date: Fri Mar 21 21:55:06 2008
platform: Mac OS10
version: MicroWorlds Ex

Here is a section of a procedure that doesn't work:

question [Guess one kind of animal you can hunt today mate?]
ifelse member? answer = [snakes lobsters monkeys pigs rabbits]
[announce [That's right][master]]
[announce [No but you'll find out soon][master]]
end

The error message reads "question doesn't report anything to if"

I get the same error if I use ifelse with parse or just answer by itself.  
What does it mean?

Thanks,
Benjamin