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.

Context: 'No me gusta mucho el trato, pero para eso debemos hablar y decidir como adultos un buen trato para los dos. Lo que queremos es disfrutar en el campamento.' 'I do not understand spanish. Please speak to me in English.' 'Sorry I'm practicing my Spanish for the camp. I do not like the deal very much, but for that we must talk and decide as adults a good deal for both of us. What we want is to enjoy in the camp.'
Utterance: 'By giving you all three food and 2 of the three firewood, you're definitely getting much more than I am.'
No

Context: 'Hi how are you today? ' 'am fine and you?' 'I am good. Do you have any preferences on which items you would like most?'
Utterance: 'yes i really need a high amount of water and food.i have firewood in excess'
Yes

Context: 'Hi, how goes it?' 'It's going alright. What do you need the most to trade?' 'well, I run and could use some extra water. How about you?'
Utterance: 'That's a good reason! I don't run, but could use some water. '

No