The matchLevel indicates how well the category was matched to a WordNet synset.
0 = good match (if a synset is given)
1 = matched to appropriate parent synset (e.g. AccentChair is matched with the appropriate chair synset)
2 = so-so match (category is matched to a related synset - e.g.CeilingLamp is matched with chandelier. chandelier and CeilingLamp are related, but CeilingLamp is not a hyponym of chandelier)