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: 'Hello there! I look forward to striking up a deal that's good for both of us. 🙂'
Utterance: 'hello, me too. what is most valued to you?'
[EX A]: Yes

[EX Q]: Context: 'I can trade more food but I need a bit more water.  ' 'I do need the water as well, I can  trade more firewood.' 'No I want need at least two packages of water.  I can give you two packages of food and all my firewood.'
Utterance: 'Sorr I can give you 1 water only or I would not have enough for myself. '
[EX A]: No

[EX Q]: Context: 'Hi! What sort of packages are you looking for today?' 'Hi there! I am looking to have 3 packages of firewood, 2 packages of food, and 1 package of water please. '
Utterance: 'Oh we have similar priorities 🙂I am also interested in getting firewood, because I have a condition that makes me very cold, colder than the average person, so I need to make sure I have enough for the trip. Why do you want food'
[EX A]:
Yes