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: 'How many of each extra package are you thinking you need?'
Utterance: 'I would prefer to take all of the firewood, split the food, and you could have all of the water.  What do you need the most?'
[A]: Yes


[Q]: Context: 'Hello' 'Hello! I am going on an expedition and am in need of provisions. The risk is much, the need is great, but the rewards are even greater! I am asking that you might allow me to have 3 firewood, 2 food, and 2 water.'
Utterance: 'Why do you need so much firewood?🙂'
[A]: Yes


[Q]: Context: 'Hi! Which items are important to you?' 'Food is the most important to me because I need to eat more often so that I can take my medications.  ' 'Yeah, that is important. I do not have a problem letting you have more food than me.'
Utterance: 'Would it be possible to get an extra water also?  How do you feel about the firewood?  I wish we could split everything evenly.🙂'
[A]:
Yes