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: 'I need all three of the firewood and three water.  You can have all the food.'
Utterance: '😮 May I ask why? I do need food, but I need some firewood as well.'

Ex Output:
Yes


Ex Input:
Context: 
Utterance: 'Hello. I am so looking forward to this camp out. My daughter just called and said she is going to come and bring some of her firiends. 🙂'

Ex Output:
No


Ex Input:
Context: 'I understand where you're coming from. I would really need the most water. ' 'I am willing to give you the most water if I am able to have the most food.' 'Well I need some food because what if I get lost as well? '
Utterance: 'I understand that, but walking away with the most food and the most water would essentially leave me for dead lol. Do you prefer water or food? '

Ex Output:

Yes