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: 'Then How about I get two foods, 1 firewood and 1 water?' 'Like i said food is my top priority so i will not do well with less than 2.' 'Then you get two food and no firewood here.😮'
Utterance: 'You mean you can't let up one firewood for me?'

Output: No


Input: Consider Input: Context: 'Great! What extra supplies would you like to bring?' 'Since it's hot there, I get thirsty and dry real quick. 😡' 'Oh ok, well I plan on bringing some juice, beer and other drinks. So I could spare some extra water. And I am pretty good at fishing, so I won't need much food either'
Utterance: 'How nice of you. I certain we can work something out. 🙂'

Output: No


Input: Consider Input: Context: 'What are your preferences?  I always love having a big fire at night when I am camping and I do think water is more important than food.' 'I like to have a lot of food to keep my energy up, but I might need some firewood to cook that food. I can't wait for my camping trip.🙂' 'I love camping also!  Yes, I can see how you would need firewood if you want to cook your food.  So, food is more important to you than water?'
Utterance: 'Yes, I will need a little water to wash that food down with though. Are you going to be needing a lot of water?'


Output: Yes


