On: Announcing SyntaxNet: The World’s Most Accurate Natural Language Parser

[nl]

There's plenty around, eg: http://journals.plos.org/plosone/article?id=10.1371/journal....

[colllectorof → nl]

I don't see how the paper you're linking to support Hinton's supposition. It's a study of topology, it doesn't aim to show that biological neural networks learn via backpropagation.