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: 'I would like 3 firewods 1 food and 1 water we stay up late and need extra firewood' 'Oh thats expensive .There's too much cold out here and thats our major package for survival ' 'Okay when we are not camping we work at night so we are use to being up at night so we like extra firewood just to sit around campfire and chat'
Utterance: 'Yours is still better.You using it for cht but we seriously need it for survival.But i can give you a firewood and a pakage of water in exchange for two firewoods.What do you think?'

Ex Output:
Yes


Ex Input:
Context: 'I don't want to be too hungry either but I think perhaps I might need an extra water to compensate for the lack of food.' 'Since I am giving you all of the firewood that you said was most important to you, I feel I should get at least the same amount of items as you, especially since you are getting exactly the firewood you want. I will need to stick to three waters and two food.' 'The firewood is most important to me to be sure. However, if you get more food and all of the water I could end up going hungry.☹️'
Utterance: 'Well I would be happy to exchange you one of your firewood for the one water you need. That way you won't go thirsty.'

Ex Output:
Yes


Ex Input:
Context: 'HI, my heater hasn't arrived yet and we are in need of extra firewood. Plus, we're camping where there is 6 months of darkness, in Sweden. 😮' 'hi turker i will be needing firewood as well because i need to keep warm while i camp.i suggest i take 2 firewood, 1 water and 1 food while you can have 1 firewood, 2 water and two foods' 'I can take 2 firewoods, you can take all the food and most of the water. So, I am offering you all the food and water.🙂'
Utterance: 'I suggest you look at my offer because you can get hungry and also need water.i really need the firewood as well'

Ex Output:

Yes