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: 'You need a pack of each?' 'Yes, at least 1 of firewood, one of water and one of food.' 'Okay, that would work for me. I'm sure you have good reasons.'
Utterance: 'Do you have a small group, like I do?'

Ex Output:
No


Ex Input:
Context: 'one of my kids is on medication so we are going to need to pack a lot of water. so if could spare that it would be appreciated.' 'Well sadly I plan to go hiking a lot so I will need lots of water, but perhaps we can come to a reasonable agreement if I have to shorten my hikes.' 'ok what do you have in mind?'
Utterance: 'Well if I gave you a majority of the water, I would like 1 water, 3 firewood and 1 food.'

Ex Output:
No


Ex Input:
Context: 'Hello my friend! Are you ready to go camping?'
Utterance: 'Getting there, just need some more supplies to be safe.'

Ex Output:

No