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.

Q: Context: 'Hello'
Utterance: 'hello, so what is your most important thing that you want? '

A: Yes
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Q: Context: 'hi there! ready to go hiking? Where will you be going, I'll be going to NY, the Catskills mountains.' 'yes im ready rocky mountains ' 'awesome! I love the rockies. So let's try and divy up our extra supplies then. Personally, I feel that I'd need the most extra food, as I'm a rather large guy and plan to go hiking a lot during this time. Firewood would be nice, so I could have a big bonfire. What are your prefernces? '
Utterance: 'i need food the most since there will be my kids and I. I can give up my firewood for food'

A: No
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Q: Context: 'Food is a second priority for me, as I will be metal-detecting as well, & cannot risk fainting from the heat. How about I give you two firewood (I don't think we can "share", haha), you can give me two food packages, and two water packages.' 'okay, I am willing to give up more food to get the firewood, I like your offer🙂' 'I do as well. I'm glad we could come to an agreement! 🙂'
Utterance: 'yes, I agree to give you two of my food packages, and two water packages and you give me two firewood'

A:
No
****