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.

Example Input: Context: 'how do you propose we split the food then?' 'Well I don't mind either way about the food. I'll recommend giving you 2 firewood 1 food and 1 water. ' 'how about you get 3 waters and 2 foods? Does that work better?'
Utterance: 'yes how much firewood. I need at least 1 to cook the food.'
Example Output: No

Example Input: Context: 'I would want to keep at least one packet of food for myself, unless you want to just swap 3 firewoods for 3 packets of food, to keep it simple?' 'I like your plan.  It is simple. I will agree to that.' 'So all that is left is water, i guess i should atleast drink alot of it if i wont eat much haha 🙂'
Utterance: 'For sure, and you will need some way to put out the fire. 😮'
Example Output: No

Example Input: Context: 'That seems fair. How about water. How would that be split? I'm very concerned.' 'Me too. There is little natural sources where I'm going. ' 'I'm not familiar with my surroundings. None of us going have ever been to this spot.'
Utterance: 'I mean I would give two waters if I could get one more food. So 2 water for you and 2 food.'
Example Output:
No