A massive sinkhole opened up at a soccer field in Alton, Illinois, on Wednesday. A 100-foot-wide sinkhole opened beneath a soccer field in Illinois on Wednesday as a result of a collapse at a nearby underground mine, officials said. The sinkhole formed at around 10 a.m. at Gordon Moore Park in Alton. Surveillance video from the City of Alton shows the moment the sinkhole opens and swallows a light pole on the field in a cloud of dust. Drone video shows the aftermath of the crater in the center of the field.

Much of the knowledge encoded in transformer language models (LMs) may be expressed in terms of relations: relations between words and their synonyms, entities and their attributes, etc. We show that, for a subset of relations, this computation is well-approximated by a single linear transformation on the subject representation. Linear relation representations may be obtained by constructing a first-order approximation to the LM from a single prompt, and they exist for a variety of factual, commonsense, and linguistic relations. However, we also identify many cases in which LM predictions capture relational knowledge accurately, but this knowledge is not linearly encoded in their representations. Our results thus reveal a simple, interpretable, but heterogeneously deployed knowledge representation strategy in transformer LMs.