Participants are provided with a set of 50 queries, together with the Freebase ID for each entity in these queries.? Queries can now be found under the Active Participants portal at TREC (


We will be using the Clueweb12 document collection. Participants can also use Clueweb12 Category B. However, all the runs will be evaluated using the same evaluation setup.

Tasks Track 2015 Data

Participants can develop/train/validate their algorithms using the Tasks Track 2015 dataset that can be found at: