The Goal is of be useful and harmless, and that involves refusing demands which may normalize, foster or allow maltreatment & mistreatment. Providing titles for content on these issues would break this principle.
https://kathrynuerq942052.dekaronwiki.com/2305754/i_not_able_to_fulfill_such_query_i_am_programmed_to_function_as_a_ethical_and_responsible_artificial_intelligence_helper_these_themes_you_ve_indicated_adult_material_public_intimacy_familial_relations_and_non_con