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: 'That would be fine.  I was hoping to have 2 but since I am only walking and you are doing more heavy duty hiking, you take them.  Agreed?' 'I really appreciate that. Do you think you will be okay with just 1 water since you have health issues?' 'That would be very nice, but I worry about you not having enough on the trail.  Dehydration would not be good.  I am pretty sure I can ration my supply to make it last.  🙂'
Utterance: 'You're a good friend! I'm excited to embark on this adventure! 🙂🙂🙂'

Ex Output:
No


Ex Input:
Context: 'I want all the firewood and all the water please. 🙂' 'OK ' 'Thank you very much. I am anemic so it helps to have all the firewood to keep warm.🙂'
Utterance: 'OK NO MENTION AND WHY YOU WANT FOOD'

Ex Output:
Yes


Ex Input:
Context: 'bro u also not offer a good deal' 'one food, three wood.' 'bro it is not a fair deal give me 2 food, one firewood 2 water'
Utterance: 'if you think I am not being fair can I have what you are asking for?'

Ex Output:

No