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 don't think I will be able to give you 2 waters. I'm desperate. I need at least 2. I would give you 1 if I could get 3 packages of food. I would give you all the firewood. ' 'If i give you 3 packages of food then i will take 3 packages of firewood.' 'So I get 2 waters and 3 foods. and you get the rest?'
Utterance: 'I could use one food too. How am i going to survive without eating anything?'
[A]: No


[Q]: Context: 'Hello, how are you? Looking forward to camping?'
Utterance: 'Oh yeah, that's for sure. What camping item do you prioritize?'
[A]: Yes


[Q]: Context: 'Same here. ' 'I have diabetes, so it is very important to me that I get extra packages of water and food. When I'm at home, I always need to pack extra drinks and snacks for myself in case I go into shock and need to take medication. The trip could be very dangerous for me if I don't have access to these additional supplies. ' 'Actually mine own purposeful need is firewood and water. Being on a first time adventure, I lack these items as I was inadequately prepared.'
Utterance: 'Okay, so firewood and water are your two most pressing needs?'
[A]:
Yes