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.

Context: 'I'm interested in hearing more about why you want a 2/1 split: Is the food worth more to you than the third firewood? If so, I'm happy to do that split, but I'd like 3 water in return.' 'Okay, like I said I have two growing boys with a very healthy appetite.  They will make my life miserable if they don't have enough to eat.  I would be willing to give you the 3 water.' 'ok, that sounds like a deal. 🙂'
Utterance: 'cool - thank you!  I guess we can submit that then'
No

Context: 'I also worried about those two items, especially water.' 'Yes, they say it supposed to be really hot the next few days.' 'yes, how do you suggest we share these resources?'
Utterance: 'Tell me, how stocked up are you on food and firewood?'
Yes

Context: 'yeah I didn't pack enough for my trip, so I'm a little worried about my supplies.' 'I see. I wouldn't want you to go hungry. ☹️' 'thank you for that.'
Utterance: 'I'm glad we seem to have come to an agreement. This camping trip is going to be fun!'

No