echo set to 1
graphics set to 1
verbosity set to 0
tuna has fin .

            +--C05C03--+
    +-C07C05+   +C07C03+C03C01+
    |       |   |      |      |
LEFT-WALL tuna has    fin     .

eagle isa bird .

            +---C06C04--+
    +-C07C06+    +C06C04+C04C01+
    |       |    |      |      |
LEFT-WALL eagle isa   bird     .

fin isa extremity .

           +--C03C02--+
    +C07C03+   +C06C02+C02C01+
    |      |   |      |      |
LEFT-WALL fin isa extremity  .

tuna isa fish .



LEFT-WALL [tuna] [isa] [fish] [.]

fin has scale .

           +--C03C02--+
    +C07C03+   +C07C02+C02C01+
    |      |   |      |      |
LEFT-WALL fin has   scale    .

eagle has wing .

            +---C06C04--+
    +-C07C06+    +C07C04+C04C01+
    |       |    |      |      |
LEFT-WALL eagle has   wing     .

wing has feather .



LEFT-WALL [wing] [has] [feather] [.]

wing isa extremity .



LEFT-WALL [wing] [isa] [extremity] [.]

herring isa fish .



LEFT-WALL [herring] [isa] [fish] [.]

herring has fin .

             +---C05C03---+
    +-C07C05-+     +C07C03+C03C01+
    |        |     |      |      |
LEFT-WALL herring has    fin     .

parrot isa bird .

             +---C06C04--+
    +-C07C06-+    +C06C04+C04C01+
    |        |    |      |      |
LEFT-WALL parrot isa   bird     .

parrot has wing .

             +---C06C04--+
    +-C07C06-+    +C07C04+C04C01+
    |        |    |      |      |
LEFT-WALL parrot has   wing     .

Bye.