Modeling the author's position from research papers into RDF graph

Hello community, 

I am having troubles for modeling the position behavior of authors in research papers. I have a relational database with three tables: 
author (authorID, name) 
paper (paperID, title, abstract, date) and many-to-many relationship 
author_paper (authorID, paperID, position) 

the position attribute is the order (integer) of author N into the paper M (e.g: first author, second author...) 

I want to generate a RDF graph from this relational database. In this step, I am testing D2RQ platform [1], however, the RDF graph obtained isn't the desired. 

Any idea about how to capture the author's position into RDF graph from a relational database? 

Best regards. 

[1] http://d2rq.org/d2rq-language 


Prof. Yusniel Hidalgo Delgado 
University of Informatics Sciences 
http://www.uci.cu/ 
Havana, Cuba 


http://www.uci.cu