I think I can answer your second question.
> The following query:
>> find Allele IS cho ; follow Phenotype_picture ; >Pick_me_to_call
>> Doesn't work, though
>> find Allele IS cho ; follow Phenotype_picture ; >Description
>> does work...
">" is the same thing as "follow". You can't follow to a value of type
Text, though you can follow to a value of type ?Text. I'll bet your model
for Pick_me_to_call is using Text instead of ?Text. Mine does.
> Is there a different way to query Pick_me_to_call values?
Not with this simple query language. Possibly with AcePerl, I'm not sure, I
don't use it enough. Definitely with Tablemaker or AQL. The AQL query
would be this:
select Gif from Gif in object("Allele","cho") -> Phenotype_picture -> Pick_me_to_call
Or using an alternative syntax, this:
from A in class Allele,
P in A->Phenotype_picture,
Gif in P->Pick_me_to_call
where A = "cho"