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: 'Firewood is not overly interesting to me, but water is somewhat enticing.' 'Ok, great - I can give you all of my waters in exchange for a majority of the food and half of firewood' 'Half of firewood? There are 3 so one of us has to get more. I would need more of that. '
Utterance: 'Yep, I know there's three and no way to split evenly lol - can you give me a justifiable reason as to why you deserve more over me? Please convince me.'
Example Output: Yes

Example Input: Context: 'i have sicked people and kids so i must need food water fire wood. please help me friend' 'I am sick and have a large family if we cant cooperate together we all get nothing' 'mind your words mr. i am in some trouble that's why i ask you this help. its not good man'
Utterance: 'Ok I am going to say this once before we both get nothing, I will get 3 Firewood, 2 Water and 0 Food. You will get 3 Food, 1 Water'
Example Output: No

Example Input: Context: 'I got some spare wood. I’m a little short on food though. I didn’t pack enough. ' 'Great, we can split the food, how are you on water?' 'That would be great. I need to have frequent small meals throughout the day so the extra food would help. I have plenty of water. '
Utterance: 'alright, so I'll keep the water, and firewood, and give you 2 extra food.  Does that sound like a good deal?'
Example Output:
Yes

