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: 'Yes, I expect that! You need food most and I need water, so let's propose an exact trade? 3 for 3?' 'My main objective for the camp is food and firewood, since I have a large family and the amount of food they give in the camp is very small for all my family and my wife and I have to cook with firewood in the camp.' 'I understand completely. I would like to have all three water, and I'm only traveling with just me, so how about 1 firewood? The rest for you.'
Utterance: 'No me gusta mucho el trato, pero para eso debemos hablar y decidir como adultos un buen trato para los dos. Lo que queremos es disfrutar en el campamento.'

Output: No


Input: Consider Input: Context: 'I want all the firewood and all the water please. 🙂' 'OK ' 'Thank you very much. I am anemic so it helps to have all the firewood to keep warm.🙂'
Utterance: 'OK NO MENTION AND WHY YOU WANT FOOD'

Output: Yes


Input: Consider Input: Context: 'I would really like 3 food, 1 water, and 1 firewood if possible. Would you agree to that instead?' 'If you were me would you be happy with 0 Foods, 2 waters, and 2 Firewoods? when water is your priority? maybe we can make it even, your highest priority is Food and mine is water? you can have all firewood? I will be shorten out on everything except the water and youll get 3 foods and 3 firewoods, while i only get 3 waters?' 'Ok, I will agree to me getting 3 food and 3 firewood. Thank you for discussing this with me! 🙂'
Utterance: 'yay! submitting deal!'


Output: No