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.

Example Input: Context: 'so If I understand correctly, the Deal is I get 3 Food and 2 Water: While you get 3 Firewood and 1 Water?' 'I was just negotiating the water for now.  I was trying to do one at a time.' 'ah, I'm definitely ok with doing one at a time: A 2:1 split is definitely OK with me: The issue is, if we consider each individually, it might be harder to come to a deal, but I'm happy to do it your way.'
Utterance: 'How about you take 1 firewood, I''l take 2 and with food, you can have 2 and I'll take one package.  I have two very hungry boys!'
Example Output: No

Example Input: Context: 'Yeah, What did think about water? ' 'I think water is great! I don't need very much for this trip, but water is delicious.' 'Okay, but water is important to me because I have health issues. So I drink more water for save my health.'
Utterance: 'Okay! You can have all the water. I want all the food.'
Example Output: No

Example Input: Context: 'Hi there.. I'm sorry, I didn't see your offer as it doesn't show it for 10 messages, I believe.  So, here's the situation.. I think I can get by with less firewood as I'm a Floridian and prefer it cooler anyway.. also the food is not a huge thing for me as we can catch / improvise around the campsite - but I'm definitely interested in as much water as possible.. both for cooking and cleaning purposes, as well as drinking, of course.  🙂' 'okay so what do you suggest' 'Well, I recognize you're gonna need water too.. so I'd love to take 2 of them, giving you one and I'm totally ok with going 1 on the firewood and one on the food.. that way we all ensure we have enough.. you're making out a bit better in quantity that way but I think its best for both of us 🙂'
Utterance: 'i botttle of water for a can of food and 2 firewoods'
Example Output:
No