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.

Q: Context: 'Wish it was an easy car ride.  We're miles and miles from a store and it's getting dark.  I don't do well driving in the dark.  I think we might be getting close to agreement.  As I understand it:  you would get 1 water, 2 firewood and 2 food portions?  Is that correct?' 'Actually, I suggested that you would get 1 water, 1 firewood and 1 food portion.  I can compromise with you though.  I would like 2 water portions, 1 firewood and 1 food.' 'Since I arrived with no water at all, I would definitely need at least 2 waters.  I'm afraid I don't have a lot of "wiggle room" with that.  I'm open for the other supplies.  Ideally, I would like to have 2 waters, 1 firewood and 1 food portion.'
Utterance: 'If that's the case, I would like 1 water, 3 firewood and 3 food portions.'

A: No
****
Q: Context: 'Hello.  I hope you are well.  I would like to have all of the water, 2 of the firewood and 1 of the food.  ' 'Hello.  I'm actually not doing too well.  There have been a few problems and I will need some of the extra packages.  I'll need two of the waters, 2 of the firewood and 2 of the food.'
Utterance: 'I'm sorry to hear that you are not doing well.  I've also have some issues.  On the way up to the camp site, all of my clean water spilled in the car.  I was really hoping to be able to get all of the available water.  Why aren't you well?  I hope it's not serious.  ☹️'

A: Yes
****
Q: Context: 'Ya so I could use a lot of water! Would you be willing for me to take one food two water and two firewood? ' 'Since we will have so much food to cook we could probably use the extra firewood too,would you be ok with me taking 2 food and 1 water and 2 firewood?🙂' 'No I'm giving you two of your top items I think it's only fair I get more items. '
Utterance: 'ok, that does make sense. I would agree to that. 🙂'

A:
No
****