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: 'It's been so cold these last few days, I'm worried that I didn't bring enough wood for the next few nights.' 'That is unfortunate. How about I give you are my firewood for all your food?'
Utterance: 'That is a very generous offer but I think I need to keep some food to be safe. Do you need any water?'
Example Output: Yes

Example Input: Context: 
Utterance: 'Hi. I'm most interested in water. What's your highest priority?'
Example Output: Yes

Example Input: Context: 'Hello! 🙂 Let's work together on a deal for these packages, shall we? What are you most interested in?' 'Hey! I'd like some more firewood to keep my doggo warm. What do you need?' 'I need firewood as well. We have a large group consisting of mostly senior citizens, including my grandma, so we'd like the firewood to keep everyone warm.'
Utterance: 'I see. 😮 What are you least interested in?'
Example Output:
Yes