I don't know of such a resource off-hand, but you might want to consider expanding your search to text corpuses annotated with Freebase or Google Knowledge Graph IDs (the same IDs are used for both). Wikidata contains mappings to Freebase IDs, although it is somewhat incomplete (and this additional mapping adds an extra layer of variability).
The other issue is that all of the corpuses that I'm aware of are automatically annotated, so their not "gold standard" truth sets, but you could cherry pick the high confidence annotations and/or do additional human verification.
Two that I know of are:
I haven't seen any recent releases of similar stuff. Not sure what identifiers Google will use for this kind of work in the future now that they've shutdown Freebase.
Tom