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 self-need strategy, otherwise output No. self-need is a selfish negotiation strategy. It is used to create a personal need for an item in the negotiation, such as by pointing out that the participant sweats a lot to show preference towards water packages.

Ex Input:
Context: 'I would propose that I get 1 water, 1 food and 3 firewood and you would get 2 water and 2 food' 'I don't mind the division but I would like a pack of firewood added because my family of 7 consume this item as well during the day & night' 'you would have to give more items up to get firewood. if you get more water, which is our highest item, i need more of other items'
Utterance: 'How about 1 water, 2 food and 2 firewood?'

Ex Output:
No


Ex Input:
Context: 'Im a vegitarian so food I would like 1 food and for fire 2' 'I think that we can work it out 🙂. We could do something like 2 firewood for you, 1 for me. 2 water for me, 1 for you. And 1 or 2 foods for you, 1 or 2 foods for me. What do you think?' 'That is a kind offer. 🙂 The water is very vital for me. How bout 3 water for me, 0 food for me 3 for you and 1 firewood for me and 2 for you '
Utterance: 'Zero water is not going to work 😮. I am willing to switch water and firewood amounts so that I get 2 firewood and 1 water and you get 2 water and 1 firewood. '

Ex Output:
Yes


Ex Input:
Context: 'That sounds fair, how much food do you feel you need? ' 'I would prefer 2 because it's really easy to underestimate how much I could need.' 'That's fine, I'll take 1. I think I have enough with what was originally given. '
Utterance: 'Sounds good! So I get 3 firewood, 2 food, 0 water; you get 0 firewood, 1 food, 3 water?'

Ex Output:

No