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: 'Oh no! I hope you are okay! ' 'Yeah, I'm okay now. It's just that I need to have a lot of food around to be able to manage it properly. Like on this camping trip.' 'I totally understand! I am in need of food too, but it sounds like you really need it so I am hapy to give you all of the food if I can have all of the firewood?'
Utterance: 'What is your need for water? I could use some of that, too.'
Example Output: Yes

Example Input: Context: 'You must be a comedian. We will need to come to a compromise because there's no way that's going to happen. I am like a water buffalo so I'll need at least two waters. In addition, my family is from the South and will need firewood as well.' 'I can't swim too. I think two waters will help me to survive on this trip and I will need at least two firewood to make fish or other food items for my family. ' 'You don't need this water to swim. You can take two of the food if you're worried about food. I will take two water and two firewood since I have a large family to nourish and keep warm. Your initial suggestion of 3 waters and firewood is laughable. Please provide a realistic compromise.'
Utterance: 'If I take two waters, 1 firewood, and 2 food supplies, this will help me during the trip. It seems as if you are more skilled than I am on a camping trip. Please consider my request☹️'
Example Output: No

Example Input: Context: 'okay that sounds like a better deal then! I will take all the firewood and 1 food, and you can take the 2 food packages' 'Awesome, I appreciate that. How does the water need look on your side?' 'I think having two waters would be good for me because my mom forget to pick extras up at the store yesterday😮'
Utterance: 'Oh no! Moms can always be so forgetful. I do notice that leaves you with 6 items and me with 3 though. I think it might be better if I take the 2 waters to make it more equal.'
Example Output:
No