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: 'I need 2 firewood because it gets below freezing at night' 'Oh I wouldn't want for you to freeze☹️ It also gets cold where I am, so I need 2 firewood as well.' 'IF I can't get 2 pieces of firewood, I will walk away'
Utterance: 'oh that is too bad. I feel the same way.😮'

A: No
****
Q: Context: 
Utterance: 'Hello! And happy camping! 🙂 To start off, I am thinking that I will need at least 3 firewood, 2 water and 1 food. Last time my axe broke and we ran out of wood! What do you think/need?'

A: Yes
****
Q: Context: 'Hello 🙂 Hope you have a good amount of supplies for your trip!' 'Not really! I will need you to give me 3 food, 2 water and 2 firewood.' 'Yea, that's not going to work for me. That would leave me with NO food, and only 1 water, and 1 firewood. Would you take that deal, if I offered it back to you?'
Utterance: 'Ok what will work for you?'

A:
No
****