The Web of Data has many equivalent URIs.
This service helps you to find co-references between different data sets. Enter a known URI, or use Sindice to search first.
JSON-LD (JavaScript Object Notation for Linking Data) is a lightweight Linked Data format that gives your data context. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on the already successful JSON format and provides a way to help JSON data interoperate at Web-scale.