Mental synthesis of Bill Clinton holding a lion. Once selective neurons for Bill Clinton and the lion are identified, a subject can be asked to imagine Bill Clinton holding the lion on his lap. The Mental Synthesis theory predicts that both the Clinton neuron and the lion neuron will increase their firing rate and that their activity will be synchronized. 

Images modified from: 1. William J. Clinton at the Parliament in London, United Kingdom, November 29, 1995.  https://commons.wikimedia.org/wiki/File:Bill_Clinton_1995_im_Parlament_in_London.jpg 2. Lioness in the Olomouc Zoo at Svatý kopeček, Czech Republic.  https://commons.wikimedia.org/wiki/File:Lioness,_Olomouc.jpg