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In this paper, we present the experiments for the first participation of the UNED's NLP Group in the ImageCLEF bilingual ad hoc task. Two different strategies are attempted: a) Expanding and translating queries with noun phrases, and b) Performing structured searches using entities located in topic titles over image caption fields. All our experiments obtain results above the average MAP for the Spanish task. Our best result (using only structured searches over image captions) obtains 88.18%dblp:conf/clef/PeinadoALGV04 fatcat:vhapfnorgvfnfbeukhkllpzvae