The input is taken from a negotiation between two participants who take the role of campsite neighbors and negotiate for Food, Water, and Firewood packages, based on their individual preferences and requirements. Given an utterance and recent dialogue context containing past 3 utterances (wherever available), output Yes if the utterance contains the uv-part strategy, otherwise output No. uv-part is a selfish negotiation strategy. It is used to undermine the requirements of the opponent. For instance, suggesting that the opponent would not need more firewood since they already have the basic supplies or a suggestion that there might be a store near the campsite where the opponent can get the supplies instead.

Example Input: Context: 'That makes total sense.  I will let you keep all 3 of the water packages.  If I take the extra firewood for all 3 packages then I can probably boil a lot of the water to get the harmful bacteria out.  I really appreciate your generosity 🙂.  ' 'No problem.🙂  So I will keep the 3 packages of water and, since I am giving you all 3 packages of the firewood I will take back the 1 food package and keep all 3 of the food packages.' 'I would still like at least 1 package of the food please.  There has been a lot of rain in the area, but I think some poisonous mushrooms maybe prevalent in the area, so to be extra cautious I would like a little spare food on hand.'
Utterance: 'You don't have to eat the poison mushrooms. You can catch some fish from the river or hunt for small animals.  You have all of the firewood so cooking the food should not be a problem.'
Example Output: Yes

Example Input: Context: 'I think we'll both need each of the three items, but we can't split them evenly. How about I take 2 waters, 2 firewoods, and a food. You can have two food packages, a water, and a firewood.' 'hi bro, 2 water for 2 firewood 1 food for me'
Utterance: 'Do you need the extra water? I get super thirsty and I'd be willing to give up another firewood to get an extra water, while we still get at least one of each.'
Example Output: Yes

Example Input: Context: 'I recently bought two new puppies, and they are coming on the trip. I could really use the extra water for them!' 'Awww. That sounds reasonable to me. I'm hoping to have a birthday dinner for my dad on the trip, so I'd appreciate some more food and a little more firewood.' 'Happy birthday to your dad!! You can have all of the food if I can have all of the water. 🙂'
Utterance: 'That'
Example Output:
No