Sentence:  Listening for hours to his laments that the war and `` Mist Fair 's '' poverty afterwards had robbed the mare of many a racing triumph , and to his predictions of greatness for the procession of foals to come , Jenny could look forward to years of conflict with an animal who disliked her intensely and <WSD>showed</WSD> it . 
Meaning of the word marked with <WSD> tags:  establish the validity of something, as by an example, explanation or experiment