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.

Q: Context: 'I need more firewood to keep my food going.' 'I get it, in that case I'' take additional packages of food.' 'I don't think so, because I need additional packages of food in case there is an emergency.'
Utterance: 'I was under the impression you don't have the need for additional firewood as you mentioned you need additional of food and water. Let me know how many packages of item you need.'

A: Yes
****
Q: Context: 'No, I don't take this. Because food is important for my child and me.' 'Try to understand our situation. We had food a week back. We were drinking only water for the whole week. We are dying of hunger. Kindly understand our situation.' 'Even me too facing the same, but i am ready to share one food with you. You can offer me more water to safe myself without dying. Both will be happy'
Utterance: 'Okay I shall give you 1 package of food and 2 packages of water. Is that okay for you now?'

A: No
****
Q: Context: 
Utterance: 'Hello! I'm packing for my camping adventure.'

A:
No
****