Sentence:  "Actually on the strength of matrimonial alliances of the Bhargavas with ruling families of Kanyakubja and Ayoddhya, Parasurama organised a confederacy of various kingdoms including Vaisali, Videha, Kasi, Kanyakubja and Ayodhya which fought the Haihayas on various batterfields.
Entities:
entity1: kingdoms
entity2: confederacy
Relation: Member-Collection