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: '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.' 'no that won't work.  I will give you 3 food and 1 water.  I will take 3 wood and 2 waters.' 'I did not know you wanted water. Ok, that's great so I will take all 3 extra packages of food.As for the water I would like 2 waters because my dog is coming along with us for our trip and extra water for him will be needed.'
Utterance: 'i think i should have 2 waters because i will need to put the fire out to protect the forest.'

A: No
****
Q: Context: 'I have not really camped before so I am looking for as many supplies as possible.  What about I get 3 food, 3 firewood, and 1 water. ' 'funnny you but no. so what else will i be left with if i give you those. okay let say i get 2 food, 2 firewood and 1 water.' 'I am really bad at cooking so will probably need an extra good just because I'll ruin one of the 3.  Plus Im bringing 2 dogs they can eat the bad food I make 😮  I dont plan on hiking much so how bought I keep all 3 foods, and you keep all 3 waters and we can split the firewood.  2 for me, 1 for you. Great deal!'
Utterance: 'i too i am bad at cooking and i will spend a longer time in the woods so i will need atleast 2 foods, 2 firewood and 1 water'

A: No
****
Q: Context: 'For you?' 'yes. I am yet to know your priority. Which I guess should be either water or firewood' 'That deal is not favorable for me'
Utterance: 'Feel free to counter, but I'm not loving anything that I've gotten so far.'

A:
No
****