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: 'We will have 50 adults with us. How about 2 firewood, 1 food, 1 water for you?🙂' 'lots of work for the both of us, at least you will have lots of help on you end. I accept the 2 firewood specially if you have elderly with you. will you be okay if give me 2 foods? ' 'True, 2 firewood and 2 food for you and I'll take 3 waters.'
Utterance: 'that sounds perfect! thank you so much for understand and wish me luck with all of the little rascals im taking. to verify, I will be taking 2 FW, 2 Foods and 0 waters'

Ex Output:
No

Ex Input:
Context: 'Nice, I am too. I'm actually looking to gather up some extra supplies, what about you?' 'I need extra supplies as well. I'll be camping at a higher elevation and need extra firewood for warmth, extra food and some water. What do you need?' 'I was really looking for extra food, firewood is important to me but I could spare some in exchange. I normally eat more than the average person so I'm worried my food supplies as is will make it hard to get through the trip.'
Utterance: 'I would like a little extra food for myself as well. Would you be willing to split the food 1 for me and 2 for you? '

Ex Output:
No

Ex Input:
Context: 'Hello hope you are excited for the trip Im hoping we can discuss the supplies. I would like to get 2 water 1 food and 2 of the firewood '
Utterance: 'I can give you 2 waters and 1 food, but I really need more firewood. I ran out last time and I don't want to go through that again! How about you take 2 waters, 1 food, and 1 firewood? '

Ex Output:
Yes