The various tools for visual building of SPARQL queries incorporate different design decisions, and it's unclear what features are most intuitive and what directions in terms of UI should be followed both by these tools and potential new ones that emerge in the future.

This task involves the execution of some usability tests in these tools and recording the results for future use.

Note: This task was part of the "Improving Visual SPARQL Query builders" project, carried out during the Wikimedia Hackathon 2019. Project poster: