TLDR; You can track kgmids from Google's Knowledge Graph with a handy Google Sheets script, allowing you to see the changes in the entities every day. Google's Knowledge Graph has ever-changing entities, and it recently underwent a massive change, deleting...
TLDR; There are loads of structured data generators and tools. Always test your markup with 3 different validators, as each one brings up different errors and warnings. There are TONS of structured data tools out there, some of them are...
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