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: 'so you need 3 water, 2 firewood and 1 food?' 'Yes, I need 3 waters and 2 firewood and 1 food. I really believe the extra supplies will bring comfort in case something were to happen. what are your thoughts?' 'sorry, but I need alot of water too, you cannot get all 3'
Utterance: 'would you compromise with 2 waters, 2 firewood, and 0 food? '

Output: No


Input: Consider Input: Context: 'Hello fellow camper! I am interested to know your preference in items?' 'Hello! Yes I'm excited for the trip. 🙂 My most important is food. How about you?'
Utterance: 'I am excited too. I really need food too. What other item is priority for you?'

Output: Yes


Input: Consider Input: Context: 'Yes, I may need more water.  I am on a diet and I don't really cook either!  Hopefully we can work something out here.' 'That sounds great. I probably need to go on a diet, but I like my food to much. LOL' 'Well, I am pre-diabetic, so I had to do it for my health. I love food, too...especially sugar!  🙂🙂'
Utterance: 'Oh, that does change things a lot. Diabetes is a hard disease to have to deal with. So you want more firewood than water? And less food than water?'


Output: Yes