TASK DEFINITION: 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.
PROBLEM: Context: 'Hi, it is nice to be going camping. I do not have a very good sleeping bag and I can get cold at night. It would be nice to have extra firewood. I dont eat much so I do not need much extra food. Would you be willing to give me two packages of firewood for a package of food?' 'I enjoy camping as well. However, my campsite seems to be a bit chilly at night. I'd be willing to part with some firewood, yet I'd need quite a bit of food to compensate. I also have a stream nearby so water is plentiful if you need that as well.' 'I may be able to do something with regards to food. Do you have enough water?'
Utterance: 'I have more water than I need. How is your water supply?'

SOLUTION: Yes

PROBLEM: Context: 'thats terrible! i broke my leg and wont be able to collect my own firewood , could i maybe get 2 packages? ☹️' 'Terribly sorry to hear that; it sounds like you won't be able to camp much in that condition. I assume you have someone coming along to help you because of your leg?' 'just a bunch of children under 5 who wont be able to gather firewood. so i desperately need at least 2'
Utterance: 'I see, well it sounds like you're going to need some additional food with those children. How about I provide you with some additional food and you can help me with my need for heat with firewood?'

SOLUTION: No

PROBLEM: Context: 'Hello!  I'm looking forward to a big camping trip I've been planning for a long time this weekend.  How about you? Do you have any plans?' 'Me too!!! I love camping! All that activity gets me wanting to indulge on snacks and then water to quench my thirst!'
Utterance: 'Same here.  It looks like we both can use some water and snacks.  Do you have any preferences of how much you will need?  I was hoping to get 2 or 3 waters and 1 or 2 foods?'

SOLUTION:
Yes

