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 Q]: Context: 
Utterance: 'HI, my heater hasn't arrived yet and we are in need of extra firewood. Plus, we're camping where there is 6 months of darkness, in Sweden. 😮'
[EX A]: No

[EX Q]: Context: 
Utterance: 'Hi, I brought some water with me. How much do you need? '
[EX A]: Yes

[EX Q]: Context: 'Hello 🙂' 'Hello!' 'Which item do you need the most?'
Utterance: 'Firewood, due to the area that we are going to. How about you? '
[EX A]:
Yes