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: 'I think we can defintiely work together and come up with a great solution and both get what we need' 'do you have a particular item preference?' 'I do. I have been looking everything over and feel this won't be to hard to come to an agreement'
Utterance: 'Well my camp places a premium on water. How would you feel about for me: 2 water, 1 food, 1 firewood?'
[A]: Yes

[Q]: Context: 'Hello I would like to have two bottles of water and in trade will take 1 food and firewood for a higher amount of water.' 'Hello. I would consider giving you 2 waters for 3 firewood and 2 food. I have a large family so the additional firewood will help with warmth and cooking food. 🙂' 'That sounds like you could really use the extra warmth for your family'
Utterance: 'Yes it is very much needed. My family doesn't have a lot of extra bedding so having the warmth of a fire will help make sure we don't get cold at night 🙂'
[A]: Yes

[Q]: Context: 'Yes A little.. But I would need extra camping items ' 'Ok, I do too. What do you really need?' 'Thanks for asking ..! I will need 3 of food, 3 of water and 2 of firewood..'
Utterance: 'I really need water though. Are you sure you need that much?'
[A]:
Yes