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.

[Q]: Context: 'Are you bringing several coats while camping?' 'Yeah, I might even have too many.I still need water the most,so I'm thinking I should take the water and you should take the firewood.' 'I can deal with that. I'd rather a little thirst than being cold.'
Utterance: 'Okay, So I'll take all three water, you'll take all three firewood package and I'll take one food package and you get two. What do you think? 🙂'
[A]: No


[Q]: Context: 
Utterance: 'Hi there, good to connect with you. How are you today?'
[A]: No


[Q]: Context: 'Hi! I look forward to making a trade with you that's good for us both.' 'Me too, hopefully we can get together on a deal.' 'I'm hoping so too. What's most valuable to you?'
Utterance: 'Water, what about you? '
[A]:
Yes