Uncountable list grammar

I have a minor grammatical correction for (is $). Currently if the head of a list is uncountable it produces sentences like “In the bottle are some water and some wine”. There ought to be a rule
(is [(uncountable $Head) | $]) (is $Head)

Also, I would like to second all the positive comments which have been made about the design of Dialog. Marrying inform and prolog was an inspired decision.

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Actually, thinking about it again, any list of 2 or more more objects should use “is”. The rule should be: (is [$Head | [$ | $]]) (is $Head)

Edit: Another one is: (is (pair $)) is