Definition: 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.

Positive Example 1 -
Input: Context: 'That sounds pretty reasonable as I am in need of firewood the most. Would it be most reasonable to each take what we need most and split the water down the middle?' 'Yes, it would.' 'I think that sounds fair. The problem is that there are 3 waters and one of us would get two and the other one. How should we sort that?'
Utterance: 'You can take the two water. I am not that thirsty most days.'
Output: No

Positive Example 2 -
Input: Context: 'hello, how are you today?' 'Great.  Though I am a bit stressed.  I could use a camping trip. ' 'yes, me too. i am going to one. but i need some food.'
Utterance: 'Yeah.  I like to go for long hikes so for that I need water and food.  '
Output: Yes

Negative Example 1 -
Input: Context: 'Hello. I am so looking forward to this camp out. My daughter just called and said she is going to come and bring some of her firiends. 🙂' 'Hello! That sounds pretty reasonable to me. I was going out with a bunch of my buddies. We like to hike a lot in the sun, so we need lots of water. How does it sound if i take all the food and water, but you get all the firewood?' 'I love hiking. My daughter is bringing extra water. So we could trade the water for the firewood. We do need just a little food as I didn't plan on having an extra person.'
Utterance: 'Hmm, okay, that sounds reasonable. How does 3 water, 2 food and 1 firewood for me, and all the rest for you sound?'
Output: Yes

Negative Example 2 -
Input: Context: 'we want to explore the animals in the area birds and just enjoy all the nice views.' 'Cool, that sounds very nice and relaxing 🙂. It kinda sounds like my husband, he likes to do things like these with no concrete plan and just decides on the spot what he wants to do. The only problem with it is that he dumps all the planning on me so I have to make sure I have extra of ANY possible idea he has.' 'Yes we always get stuck making the plans so can I have 2 firewood and you get 2 food and 2 water? Please respond a little faster with your messages that would be very nice'
Utterance: 'Unfortunately, I need the firewood to make campfires. Since you are planning to cook a romantic camping meal, don't you need food?'
Output: No

Now complete the following example -
Input: Context: 'Good ages. They should be able to help out. We're planning to do a big bonfire, maybe some smores, and hopefully find a lake. We're looking for extra firewood and water for the bonfire and to keep hydrated' 'That sounds like a blast.   I would like to propose that you take 2 waters and 1 firewood and I'll take 2 firewoods and 1 water for our respective trips.  Does that work for you?' 'Yes, we are all looking forward to it. Thanks for being amenable and trying to make this work. That might be okay, but could we take take the 3 packages of food? Since we won't be doing as big of a bonfire, I am sure we'll hike more or swim and need the extra energy'
Utterance: 'I was hoping to take at least some of the food with me.  As you know, those teenagers seem to hungry ALL the time.  It's like feeding fuel into a bottomless pit.  So I'm definitely going to need some of the food for my trip as well.'
Output: 


Answer: No