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.

Input: Consider Input: Context: 'Okay, well if you need water and firewood, that only leaves food. If you can part with extra food, here's what I'm proposing' 'Yes you can definitely have all the food. Maybe 2 firewoods and 2 waters for me?' 'Sounds good to me.'
Utterance: 'Ok great would it be ok if we have 1 of the foods?'

Output: No


Input: Consider Input: Context: 'So do we. My kids are on meds so they need a lot of water and food' 'Which one do you prefer most?' 'They sort of need more water for their meds'
Utterance: 'I'm sorry to hear that! But can you spare 1 for me since you probably don't need all the water.'

Output: Yes


Input: Consider Input: Context: 'That is fair. Could I also have 1 food so I do not starve' 'what about your basic food rations?' 'I am severely malnourished and could use just one more food please'
Utterance: 'we got kids on this trip, they need food too.  also, your basic supplies should keep you fed well enough to not starve/be malnourished'


Output: Yes