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.

Ex Input:
Context: 'Water is my second priority item. I am sure we can work out a fair deal. What do you propose?' 'We'll be able to make it close to equal. Let's do 2 foods for one of us, 2 waters and 2 firewood for the other person. I'll take either.' 'Ok that works for me 🙂 2 food for me, 2 firewood and 1 water. Then you get 2 water and 1 food and 1 firewood. Does that work?'
Utterance: 'No close. 2 food 1 water 1 firewood for one of us. The other gets 1 food 2 water 2 firewood. Food is your number one correct?'

Ex Output:
Yes


Ex Input:
Context: 'How much firewood do you need?' 'i need two food items and one water' 'I will take 2 waters, however I would like 2 food and you can have 1 food and 3 firewoods'
Utterance: 'one food is not enough i am pregnant and i need to eat many meals'

Ex Output:
No


Ex Input:
Context: 'I really need 3 firewood because I am always cold.' '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.' 'I can give you 2 water, but I have to have 1 to help me when I am cooking.'
Utterance: 'What about the food? How much food do you need for camping?'

Ex Output:

Yes