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: 'hi! thats awesome i am going camping too, but not a lot of hiking. I am bringing 2 teenage boys so food will be very important for us' 'I definitely understand that, kids can eat a lot. I  can spare 2 extra food for all the water. ' 'that will work for me - how about i take 2 food, and all the firewood - i am hoping to teach my boys campfire songs - they need other hobbies that dont include electronics :). You can have 1 food and all the water? '
Utterance: 'I would like just 1 firewood so we can have a smores night with the younger kids if that works?'
No

Context: 'i will give you that in exchange for 1 food and 3 water with 2 firewood' 'please consider my request i'm big in size so please accept to give two pack of food and 2 water and 1 firewood' 'cool'
Utterance: 'do you accept my deal?'
No

Context: 'How many food would you like to trade for water?' 'How about 2 Water for 3 food?' 'That sounds like a good deal but I could use some firewood as well. Would you throw one of those in as well?'
Utterance: 'That doesn't seem very fair ☹️. That would be 3 food and 1 firewood for 2 water. That is 4 items exchange for 2.'

No

