How to choose a dog breed good at fetch<br>Pick a border collie for a highly trainable dog. Border collies and other herding dogs are playful, smart, and energetic. Most will love to fetch and spend hours playing if you let them.
Herding dogs is a bigger group than Border collies.
The text mentions "Border collies and other herding dogs" - so Border collies are in the group 'herding dogs', which is therefore the bigger of the two [because it contains a sub-group]. The model missed this logical conclusion.
( z1 herd :ARG1 ( z2 dog ) :ARG1-of ( z3 have-degree :ARG2 ( z4 big ) :ARG3 ( z5 more ) :ARG4 ( z6 collie :mod ( z7 border ) ) ) )