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: 'Hello, I think that my first deal will be fair 🙂' 'Well that's interesting because I don't even know what is is.'
Utterance: 'We aren't allowed to submit it just yet. So let's chat. What do you value most among the items?'

A: Yes
****
Q: Context: 
Utterance: 'Hi, I brought some water with me. How much do you need? '

A: Yes
****
Q: Context: 'please at least give one pack of water?' 'Alright, 0 food then? This is because only the firewood is significant for outside weather.' 'ok what you want now explain'
Utterance: 'You can take 2 firewood and 1 water.'

A:
No
****