Context: 'I'm doing great, thanks.' 'How many of each supply would you like? what is your favorite?' 'I am flexible, but I would prefer some food and firewood.  I have a large family to feed and all of my food needs to be cooked.'
Utterance: 'I also would prefer some food but am willing to give 3 fire wood in exchange for 3 water. I suffer from chronic dehydration because I sweat too much.'