In one of many interesting Google I/O sessions, Google shows developers how to tap into Freebase, the open core of its Knowledge Graph, to enhance their own apps with Knowledge Graph data.

The session takes a look at the Freebase APIs, and discusses how they can enhance applications to better understand people, places and things.

During the Google I/O keynote, Google SVP Amit Singhal said that Knowledge Graph already has over 570 million entities, and it continues to grow. He also announced the launch of Knowledge Graph in olish, Turkish, Simplified Chinese and Traditional Chinese.