Complex sentence: But the most satisfactory theory identifies the Kalabhras with the Kalavar and the chieftains of this tribe mentioned in Sangam Literature Sangam literature are Tiraiyan of Pavattiri and Pulli of Vengadam or Tirupati.
Split into simpler sentences: But the most satisfactory theory identifies the Kalabhras with the Kalavar. The chieftains of this tribe mentioned in Sangam literature are Tiraiyan of Pavattiri and Pulli of Vengadam or Tirupati.