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OWL quiz - negation, some, only

The eight qestions in this quiz employ a simiplified form of OWL, the Web Ontology Language.  The aim is to study the ease with which people can understand the language.  Here OWL is represented in an English-like format.  

All the information you need to know about OWL is provided in the handout available by clicking 
here; n.b. a right-click will enable you to view the handout in a new tab.  Please read this before you start the quiz and refer to it whilst completing the quiz.   All the information you need will be available when you need it.  There is no need to memorize any information.

Each question is of an identical format.  You are given a number of statements plus a potential inference from these statements and asked to confirm whether or not the inference is valid.  Please click on the 'Valid' or 'Not valid' button to indicate your answer.

All the questions in this quiz are to do with the use of not, some and only.

X, Y and MALE are classes.  'has_child' is a property.  Class and Property statements are used in each question as a reminder.

Note also that OWL keywords (i.e. the words with special meaning described in the handout) are shown in bold blue type.
Please do not use pen and paper.  The intention is to understand how well OWL concepts can be manipulated mentally.

When meaningful names are used this is purely to make the questions more realistic and aid memorisation.  Please do not make any assumptions based on the names.  Only use the information which is provided in the OWL statements.

When you have answered each question, please click on 'Next' to move on to the next page.  With the exception of the final, feedback section you need to answer each question before you can move on (n.b. all questions requiring an answer are marked with a red asterisk).  If you are not certain about the answer to a particular question, please just give what seems to you to be the most likely answer.

The object of the quiz is to compare the difficulty of the various questions.  You are not being tested.  Individual results will be treated completely confidentially and all published results will be based on aggregated scores.

At the end of the quiz there is a final section which provides you with an opportunity to give feedack.

Before you begin the quiz, we would like you to provide a small amount of information about yourself, to help us interpret the quiz results.  Please answer the questions below.  Then please read the handout carefully and click on 'Next' at the bottom of the page when you are ready to start the quiz.
1. Please rate your knowledge of formal logic on the following scale: *This question is required.
2. Please rate your knowledge specifically of OWL or other Description Logic formalisms: *This question is required.
3. Please indicate whether you use OWL or another Description Logic formalism. *This question is required.
4. Please indicate which of the following most accurately describes your relationship with English. *This question is required.
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