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.

Input: Consider Input: Context: 'I brought purification tablets so I can make do with rainwater or river water. How about you?' 'That's very smart! 🙂 Way to be prepared! I didn't think to do that.' 'So if we were to split the firewood more in your favor and I were to take all the food, and then we kind of split the water, I think we could maybe make a deal here? 🙂'
Utterance: 'I think that is definitely doable! I'd be glad to make a deal with you. Thanks for being so reasonable! 🙂🙂'

Output: No

Input: Consider Input: Context: 'Hello! I am looking forward to the camping trip but could use a few more supplies!' 'hello, me too, i guess we can share'
Utterance: 'Sounds good, I need food the most, what is your most needed item?'

Output: Yes

Input: Consider Input: Context: 'Hi! I was hoping to get 2 packages of firewood, 2 packages of water and 1 package of food and you can have the rest.' 'Hello. Is there a reason you prefer more water and firewood to food?'
Utterance: 'I get cold very easily and also get thirsty a lot. What are your preferences?'
Output: Yes