Knowledge Graph is a new feature in Google search results.It is a collection of data generated from different online sources such as wikipedia, that gives its users smarter and more relevant results for their search queries. Instead of obtaining random results based on a string of characters in keyword searches, Google provides results that are more closely related to what the user actually mean.Knowledge Graph is a huge collection of the people, places and things in the world and how they're connected to each another.
It will give a new look to Google.com search results. Currently Knowledge Graph is available only in Google.com. Above you can find an example for Knowledge Graph. Search Sachin Tendulkar or Magician Sydney