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: '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.'
[A]: No


[Q]: Context: 'What about I take 2 of the packages and you take 1? I know teenagers also drink a lot of water haha 🙂' 'He definitely does drink a lot of water, but he's in a growth spurt so 2 would be ideal. I'm happy to give up all firewood in exchange for the extra food!' 'okay that sounds like a better deal then! I will take all the firewood and 1 food, and you can take the 2 food packages'
Utterance: 'Awesome, I appreciate that. How does the water need look on your side?'
[A]: Yes


[Q]: Context: 'I am doing well! Excited to be on this camping trip! I am glad we have all the basic supplies already.' 'Agreed! I am running low on firewood, unfortunately, which I need to cook food and stay warm. ' 'Oh no! That's unfortunate! Luckily, I think I have plenty of Firewood for myself so I think it would be okay for you to have more of that if needed. I don't know if I have enough food. I love to snack all day!'
Utterance: 'That's awesome! And oh no! I have a medium amount of food so we can work that out! How are you doing on water?'
[A]:
Yes