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: 'Hi there, how are you doing today?' 'I am doing well, thanks! ' 'That's good to hear. I am going camping this weekend and need some extra supplies. What about you?'
Utterance: 'That's great! I also have a comping trip planned. We will be having an all night dance party. I could definitely use some extra supplies. What are you in need of the most?'
Example Output: Yes

Example Input: Context: 'hello, I am good, I am very excited about this trip. how are you?' 'i am great, super excited about camping as well, are there any supplies that you really need?' 'i really need water and food. we did not get enough of those.'
Utterance: 'Those are my priorities as well, how about you get all the food and two firewoods, and i get all the water and one firewood, does that sound fair?'
Example Output: No

Example Input: Context: 'That would be fine.  I was hoping to have 2 but since I am only walking and you are doing more heavy duty hiking, you take them.  Agreed?' 'I really appreciate that. Do you think you will be okay with just 1 water since you have health issues?' 'That would be very nice, but I worry about you not having enough on the trail.  Dehydration would not be good.  I am pretty sure I can ration my supply to make it last.  🙂'
Utterance: 'You're a good friend! I'm excited to embark on this adventure! 🙂🙂🙂'
Example Output:
No