What are the titles of the papers on Road trains that were published in SIGSPATIAL/GIS in 2016?
In the year 2016 in SIGSPATIAL/GIS, what are the titles of the research papers on Road trains?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/gis/AgatzBKMS0W16> <https://dblp.org/rdf/schema#publishedIn> 'SIGSPATIAL/GIS' . <https://dblp.org/rec/conf/gis/AgatzBKMS0W16> <https://dblp.org/rdf/schema#yearOfPublication> '2016' . <https://dblp.org/rec/conf/gis/AgatzBKMS0W16> <https://dblp.org/rdf/schema#title> ?answer }
<https://dblp.org/rec/conf/gis/AgatzBKMS0W16>