ex:windsurfing a :Objective;
    rdfs:label "Windsurfing".

ex:ernst a :Learner;
    rdfs:label "Ernst Schraube";
    :seeksObjective ex:windsurfing;
    :learnsCausedBy ex:boredom, ex:sealove;
    :learnsThrough ex:stand.

ex:stand a :Practice;
    rdfs:label "standing up";
    rdfs:desc "trying to just stand on a board in the water";
    :contributesTo ex:windsurfing, ex:feel_balance.

ex:feel_balance a :Objective;
    rdfs:label "feel for balance";
    rdfs:desc "get a feel for the balance".

ex:boredom a :DefensiveReason;
    rdfs:label "boredom";
    rdfs:desc "I am bored at the beach and there is nothing else to do.";
    :causeAction ex:stand.

ex:sealove a :ExpansiveReason;
    rdfs:label "love for the sea";
    rdfs:desc "I love the sea and dream about planning across the water.";
    :causeAction ex:stand.