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In recent years, a number of open databases have emerged on the Web, providing Web users with platforms to collaboratively create structured information. As these databases are intended to accommodate heterogeneous information and knowledge, they usually comprise a very large schema and billions of instances. Browsing and searching data on such a scale is not an easy task for a Web user. In this context, interactive query construction offers an intuitive interface for novice users to retrievedoi:10.1145/2484028.2484078 dblp:conf/sigir/DemidovaZN13 fatcat:q4wvos57q5aitll5sbfzxwcs5m