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 elicit-pref strategy, otherwise output No. elicit-pref is a cooperative negotiation strategy. It is used to discover the preference order of the opponent in the negotiation.

Ex Input:
Context: 'My kids will enjoy that as well. I'm hoping I can pack several extra things of firewood. If I could get 3 more packages I would feel better about having enough firewood to have campfires during the evening and to cook on. ' 'ok I completely understand. I am more than happy to offer you 3 firewood in exchange for 3 food. If you are ok with splitting 2 water for me and 1 for you that works well. My kids need food and water for their medications.' 'Hmm I will consider it. I'm worried about not having enough food for my kids. They seem to be on a growing spurt and get very frustrated quickly when they are hungry. I would be will to negotiate it I can get 3 firewood, 1 food, and 1 water. '
Utterance: 'Food is very important to me probably as much as firewood is to you. If we can stick with the 3 food, 0 firewood and 2 water that would be great. '

Ex Output:
No


Ex Input:
Context: 'That's a good idea.  I'll trust you to do the coin flip.  ' 'Sure.  🙂  I'll grab a coin.' 'Calling tails.  '
Utterance: 'Looks like 2 to you!  So it's 3 water and 1 food to me then, 3 firewood and 2 food to you?'

Ex Output:
No


Ex Input:
Context: 'That sounds amazing and delicious! maybe we can compromise? Maybe, I can get all 3 waters and you can have all 3 Foods? what do you think? ' ' I would agree to that if I can also have two things of firewood. I am going to need a lot of wood, so I can cook the meals I am making 🙂' 'I completely understand, thank you for compromising with water and food. Wished we had 4 firewoods to divide and share it equaly, may I ask how long will you be camping for? Im afraid I need 2 firewoods as well, maybe we can see who has the greater need? '
Utterance: 'I am going to be camping for a couple of weeks, so I will need quite a bit. I also realized some additional water would be good, because I have some meals that need me to boil water. Maybe you can have 2 firewood in exchange for me having one of your waters? Then you would still have plenty of water, but also plenty of firewood 🙂'

Ex Output:

No