What are some knowledge graphs you know. What is different between these ?

1. DBPedia : Entities and relationships are automatically extracted from wikipedia.
2. Wordnet: Lexical database of english language. Groups english words as synsets and provides various relationships between words in a synset. It is a knowledge base that tracks specific kinds of relationships like synonym, antonym, hyponymy and so on.  http://wordnetcode.princeton.edu/5papers.pdf
3. Yago : Also extracts knowledge from wikipedia. But also focuses on the spatial and temporal dimensions of facts
4. Freebase : community curated, beyond wikipedia,  rich in media related data music/movies it has been integrated with wikidata
5. Wikidata : community curated knowledge base . Freebase has been integrated with it.