Why there are some duplicate fields in makg?

[lxd99]

Thanks for your outstanding MAKG first. In using the data set, I find there are some duplicate fields in it. For example, the paper with id 116022 has two types "http://www.w3.org/2001/XMLSchema#date", "Paper" and two titles "Algorithms for the Construction of Digital Convex Fuzzy Hulls.", "EUSFLAT Conf. (2)". I wonder what it means if an entity has two duplicate fields.
I use the latest version data set in Zenodo.