Primera query de Búsqueda Avanzada.

here we are:
( general_title:title OR general_title:other ) AND ( general_keywords:keywords_yes OR general_keywords:yes ) AND NOT ( general_keywords:keywords_not OR general_keywords:not ) AND ( general_language:general_language ) AND ( metadata_language:metadata_language ) AND ( educational_learningResourceType:exercise ) AND ( educational_intendedEndUserRole:user ) AND ( educational_typicalAgeRange:2-3 ) AND ( rights_cost:true ) AND ( classification_taxonEntry:taxon bean )