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: 'good here, I will need 3 water as I need it to survive' 'I need water as well.  I require it for subsistence' 'how many water you need?'
Utterance: 'In a perfect world, all the water 🙂'

Ex Output:
No


Ex Input:
Context: 'I need a lot of water too. Thank you for understanding.' 'no sorry i dont think so. i need some extra water because i only need a little food' 'Okay then. I can give up one for you. Will that be okay?'
Utterance: 'no i think i need 2 waters'

Ex Output:
No


Ex Input:
Context: 'Well we actually really NEED all three items.. but I know you might, too - so I want to make a deal that's fair for you.. is there anything in particular your family needs for the trip?' 'Well, there has to be an item that you need the most. If you tell me what you need the most, we can try to make a deal around it.' 'Oh I see, its going to be THAT kind of negotiation 🙂  Let's just look at it this way.. I'm with a couple other Floridians so we're not really too worried about firewood as we prefer it cooler, anyway.. and we know the lake is nearby that's stocked with trout for eating if necessary (and of course some fresh water's there, too) - so.. I can tell you that I could go totally without Firewood if I needed to.. I'd rather not, but I could.'
Utterance: 'Do you prefer food or water more?'

Ex Output:

Yes