tuna isa fish [.] 
1 tuna 2 isa
2 isa 3 fish

herring isa fish [.] 
1 herring 2 isa
2 isa 3 fish

tuna has fin [.] 
1 tuna 2 has
2 has 3 fin

herring has fin [.] 
1 herring 2 has
2 has 3 fin

parrot isa bird [.] 
1 parrot 2 isa
2 isa 3 bird

eagle isa bird [.] 
1 eagle 2 isa
2 isa 3 bird

parrot has wing [.] 
1 parrot 2 has
2 has 3 wing

eagle has wing [.] 
1 eagle 2 has
2 has 3 wing

fin isa extremity [.] 
1 fin 2 isa
2 isa 3 extremity

wing isa extremity [.] 
1 wing 2 isa
2 isa 3 extremity

fin has scale [.] 
1 fin 3 scale
2 has 3 scale

wing has feather [.] 
1 wing 3 feather
2 has 3 feather