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.

Ex Input:
Context: 'We wantto do a lot of hiking on our trip and therefore I need extra water to make sure we stay hydrated. ' 'hi! thats awesome i am going camping too, but not a lot of hiking. I am bringing 2 teenage boys so food will be very important for us' 'I definitely understand that, kids can eat a lot. I  can spare 2 extra food for all the water. '
Utterance: 'that will work for me - how about i take 2 food, and all the firewood - i am hoping to teach my boys campfire songs - they need other hobbies that dont include electronics :). You can have 1 food and all the water? '

Ex Output:
No


Ex Input:
Context: 'I'm hoping so too. What's most valuable to you?' 'Water, what about you? ' 'Food, but I definitely do need some water, too. Can you live with taking 2 waters?'
Utterance: 'Yes, can you live with two foods? '

Ex Output:
No


Ex Input:
Context: 'Yes I do, I am going this weekend. Are you going camping too?' 'Same! I try to go every other weekend.' 'Oh cool. What supplies do you prefer to take the most of?'
Utterance: 'I do a lot of hiking mostly, love to take scenic photos. I usually carry food and water supplies?'

Ex Output:

No