Simon and Tyler will present stims for a new online experiment aimed at asking whether the meaning of sentences like "every circle is blue" are represented by speakers in terms of the subset relation (the circles are a subset of the blue things) or in terms of the identity relation (the circles are the blue circles).

One reason this is interesting is that conservativity -- a universal property of determiners in natural language -- seems to follow from the identity-based specification, but not from the subset-based variant.