Sparklis will guide you step-by-step in the formulation of queries, which are presented to you in English. At each step, Sparklis will suggest you lists of query elements that can be inserted into the question to refine your search. You can search among the lists of suggestions by auto-completion with the text fields at the top of each list. Query results are given at each step in the form of a table.
Please, watch this demo/tutorial of Sparklis before starting the survey.