The behaviour of the objects in cluster 0 (the biggest cluster by far) presents more cohesion than that of the objects in cluster 1, which have a medium mean value for most features.
merlo and Stevenson (2001) report inter-judge values of 0.53 to 0.66 for a task we consider to be comparable to ours, that of classifying verbs into unergative, unaccusative and object-drop, and argue that Carletta's "is too stringent a scale for our task, which is qualitatively quite different from content analysis" (merlo and Stevenson, 2001, 396).