(Query, Document, Relevance) free dataset for building an information retrieval system
<p>I'm interested on finding a data set like "English Relevance Judgements File List": 
<a href="http://trec.nist.gov/data/qrels_eng" rel="nofollow">http://trec.nist.gov/data/qrels_eng</a> </p>

<p>This dataset contains a labelled, pairs of queries and documents. 
However, it depends on a nonfree corpus, called "Data - English Documents":
<a href="http://trec.nist.gov/data/docs_eng.html" rel="nofollow">http://trec.nist.gov/data/docs_eng.html</a> </p>

<p><strong>Do you know any free dataset(s) similar this one?</strong> </p>

<p>Side-note: The dataset will be used in a research project for building an information retrieval system based on neural networks. </p>