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: 'HI, I will have all of the packages of food and 2 waters and 2 firewood and you can have the rest. Unless none is needed for you then I will take them all.' 'i will need 3 firewood packets.  I have a terrible disease that prevents my circulation from working properly.' 'That does sound bad. I am going camping and my kids might want to stay up late so I will need extra firewood for this to keep light and more warmth. I will take all 3 extra of the food and the water but I need 2 firewood also.'
Utterance: 'no that won't work.  I will give you 3 food and 1 water.  I will take 3 wood and 2 waters.'

A: No
****
Q: Context: 'yes, what would you like?' 'I was thinking I will take all the food and water. You can have the firewood. ' 'that's not going to work for me. I need to keep at least 2 foods and 1 firewood but you can have all the water.'
Utterance: 'Are you most interested in the food? 😮'

A: Yes
****
Q: Context: 'I am excited too. I really need food too. What other item is priority for you?' 'I also need water because we plan to do a lot of hiking. What about you?' 'Wow, I think we planned the same activities for our trip. I need water too 🙂'
Utterance: 'Haha well we'll be seeing a lot of each other then. Is water your number one or two priority?'

A:
Yes
****