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.

Example Input: Context: 'The item that I need the least is firewood because I will dedicate myself to look it up at the camp. And you?' 'Yes I think we have the same preferences.  I do not get cold easily and will bring a heavy sleeping bag.  ' 'Ok, it gets a little complicated. But let's see what you think if I grab: 3 water 1 food and 0 firewood? And you would take: 0 of water, 2 of food and 3 of firewood'
Utterance: 'That is not a bad offer.  However, I would like at least 1 water for myself.  I would be willing to allow you 2 of the 3 waters though.'
Example Output: No

Example Input: Context: 'okay so what do you suggest' 'Well, I recognize you're gonna need water too.. so I'd love to take 2 of them, giving you one and I'm totally ok with going 1 on the firewood and one on the food.. that way we all ensure we have enough.. you're making out a bit better in quantity that way but I think its best for both of us 🙂' 'i botttle of water for a can of food and 2 firewoods'
Utterance: 'Yeah, sorry, that's not going to work out for me.  I'm going to need at least 2 bottles of water, 1 food packet, and one firewood.. again, this does leave you with two each on the food and the firewood, which are both very important things for this camping trip!'
Example Output: No

Example Input: Context: 'Hello, I am very cold and need food and wood to remain warm. How about I get 3 firewood, 3 food and 1 water?'
Utterance: 'That doesn't really work for me because then I would get only 2 waters and nothing else ☹️. What do you think is your highest priority?'
Example Output:
Yes

