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 Q]: Context: 'Hello, I would really like to get most of the water and firewood packages.'
Utterance: 'You can have most of the water and firewood if I can have most of the food. I would like to get two of the firewood so I have a nice fire to come back to after searching for a source of water.'
[EX A]: Yes

[EX Q]: Context: 'i willing to swap some items for others, but we have to work togeather on it' 'ok friend how this deal 2 pack of all.?' 'two pack to who you or me?'
Utterance: 'for me. 2 pack of water 2 pack of fire wood and 2 pack of food. '
[EX A]: No

[EX Q]: Context: 'Like i said food is my top priority so i will not do well with less than 2.' 'Then you get two food and no firewood here.😮' 'You mean you can't let up one firewood for me?'
Utterance: 'Not this time, I really need all the firewood and food is a large need for my family of 8. We need the firewood to cook all our meals from the animals we hunt since we are short on food.'
[EX A]:
Yes