asterix-app/src/test/resources/AQLTS/queries/4.aql

for $sig in dataset('SIGroup')
where $sig.name = "Movie-Watchers"
let $similar_sigs :=
   for $similar_sig in dataset('SIGroup')
   where $similar_sig != $sig
   and $similar_sig.interests ~= $sig.interests
   return { "sig_name" : $similar_sig.name }
return { "similar_sigs" : $similar_sigs }