en.wikipedia.org/wiki/Winograd_schema_challenge

This date is off by one year. The Winograd Schema Challenge was first introduced by Hector Levesque in 2011 in his paper The Winograd Schema Challenge at the AAAI Spring Symposium. Later sources from the competition organizers and AAAI also describe the challenge as having been originally suggested or proposed in 2011.

The likely source of the confusion is that there is also a 2012 paper (Levesque, Davis, and Morgenstern 2012) that further developed the challenge. But that does not make 2012 the year it was first proposed.

So the statement should date the original proposal to 2011, not 2012.

The problem here is the year. The Winograd Schema Challenge was originally proposed in 2011, as documented by both the organizers' official page and later AAAI publications reviewing the challenge.

A 2012 paper by Levesque, Davis, and Morgenstern did help further formalize and develop the idea, so 2012 is an important year in the challenge's publication history. But describing the challenge itself as having been proposed in 2012 is inaccurate, because the original proposal already appeared in 2011.

Therefore, the sentence should say the challenge was proposed in 2011.