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And yet another wonderful bout of exams for the final year of my course. Now, let's play a game. Spot the two errors in the following (taken directly from my first exam paper; ignore the capitalisation inconsistencies). :3

(iii) Consider the following English-form RDF statements

Garage Ford Premium isOfType Seller
George Foreigner isOfType Buyer
buyer offer seller [my note - this means that buyers can perform action: offer on seller]
seller counterOffer buyer
buyer request seller
seller tell buyer
buyer subClassOf person
seller subClassOf representative
representative subClassOf person

...

(iv) Given the above facts and the RDF inference rules:

X R Y + R range T => Y IsOfType T [my note - X R Y refers to things like 'buyer offer seller', R range T refers to the fact that 'seller' is the person having 'offer' performed upon them]

T1 SubClassOf T2 + T2 SubClassOf T3 => T1 SubClassOf T3

X IsOfType T1 + T1 SubClassOf T2 => X IsOfType T1

...

(c) Garage Ford Premium isOfType seller + seller isOfType representative + representative subClassOf person

--
Highlight for answers!
1) (iii) states seller subClassOf representative, but c) states seller isOfType representative. Statement mismatch...
2) X IsOfType T1 + T1 SubClassOf T2 => X IsOfType T1. Although this is true, it's the most pointless rule ever.

Now, the question here is, what do you do (if you ask the invigilator and they say there are no known errors in the exam paper)?

Do you a) answer the questions on the paper, regardless of any inconsistencies you may consider there to be (after all, if you're just being silly, you'd lose marks for doing otherwise) [possibly annotating your confusion in the matter] or b) answer the questions you think the exam setter meant to ask, or c) submit both a) and b) and hope the examiners don't mind having alternative answers (imagine submitting 'well, 2 + 2 is either 4, or if you really meant 3 with that second 2, it's 5!).

A good start to the exam season! wink

Also, my internet is borked up somewhat, so I may not be around much. Rejoice o ye haters!