Table:
text: Social network analysis software
Collection of social network analysis tools and libraries
Collection of social network analysis tools and libraries
Product Main_Functionality Input_Format Output_Format Platform License_and_cost Notes_
AllegroGraph Graph Database. RDF with Gruff visualization tool RDF RDF Linux, Mac, Windows Free and Commercial AllegroGraph is a graph database. It is disk-based, fully transactional OLTP database that stores data structured in graphs rather than in tables. AllegroGraph includes a Social Networking Analytics library.
EgoNet Ego-centric network analysis Conducts interviews or takes any valid XML file Output to CSV and convertible to almost any other format Any system supporting Java Open Source, seeking contributors Egonet is a program for the collection and analysis of egocentric network data. Egonet contains facilities to assist in creating the questionnaire, collecting the data and providing general global network measures and data matrixes that can be used in further analysis by other software programs.

Question: What is the only input/output format for allegrograph under social network analysis software?