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' 'hello, so what is your most important thing that you want? '
Utterance: 'my priority is firewood. What's yours?'

A: Yes
****
Q: Context: 'Food is actually my first priority but since it seems to be first priority for us both I thought we could split that. Water doesn't seem to be a priority for you so thought I could take that' 'My first priority is actually firewood.  Food is my second.  🙂' 'Okay so would 2 firewood for you and 1 for me work, and 2 food for me and 1 for you?'
Utterance: 'I can definitely agree to that.  What was your second preference?  Water was my third.'

A: Yes
****
Q: Context: 'I could definitely use the time away from society.  What's your favorite part of camping? ' 'i love to eat' 'Oh yeah, I make a mean smore, myself.  My favorite part of the experience is the long walks through nature.  It's an experience for which I need to ensure I Have adequate hydration. '
Utterance: 'i need food and water to survive, can I have 3 food, 2 water and 0 firewood?'

A:
No
****