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.

Context: 'I want to make sure I'm well prepared for camping. How would you feel if I took 2 water, 1 firewood, and 2 food?' 'I really need 3 firewood because I am always cold.'
Utterance: 'If I gave you 3 firewood, would you give me 3 water? I can do without the wood, but the water is really important to stay hydrated.'
No

Context: 'That does sound bad. I am going camping and my kids might want to stay up late so I will need extra firewood for this to keep light and more warmth. I will take all 3 extra of the food and the water but I need 2 firewood also.' 'no that won't work.  I will give you 3 food and 1 water.  I will take 3 wood and 2 waters.' 'I did not know you wanted water. Ok, that's great so I will take all 3 extra packages of food.As for the water I would like 2 waters because my dog is coming along with us for our trip and extra water for him will be needed.'
Utterance: 'i think i should have 2 waters because i will need to put the fire out to protect the forest.'
No

Context: 'Hi! I'm super excited to camping with my family! We have had to cancel all our original travel plans due to Covid and we're really looking forward to this trip. Especially my son! He's been so restless at home. Are you going camping too?' 'Yes, I am! I can't wait. I'm going on a 3 week trip to this gorgeous lake.'
Utterance: 'Wow, 3 weeks is a long camping trip! I don't know if I have enough supplies to go for a trip that long. Are you doing a cabin-style or really roughing it? My husband and son want to do a lot of hiking so we're thinking of moving camp daily.'

No