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.

Input: Consider Input: Context: 'Hello!  I'm looking forward to a big camping trip I've been planning for a long time this weekend.  How about you? Do you have any plans?' 'Me too!!! I love camping! All that activity gets me wanting to indulge on snacks and then water to quench my thirst!'
Utterance: 'Same here.  It looks like we both can use some water and snacks.  Do you have any preferences of how much you will need?  I was hoping to get 2 or 3 waters and 1 or 2 foods?'

Output: Yes


Input: Consider Input: Context: 'How would you feel about giving me some firewood for food?' 'Maybe, I need food too but I want firewood the most.' 'Do you have a deal to offer?'
Utterance: 'I would like 2 firewood, and I don't care about anything else. I would give you 2 water and 3 food'

Output: No


Input: Consider Input: Context: '🙂 I am fine with it. How about the firewood?' 'i'll take 2, you can have 1? ' 'Firewood is my second priority. Can I have 2 of firewood?'
Utterance: 'okay🙂 is it cold so you want firewood?'


Output: Yes