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: 'Hello there! I look forward to striking up a deal that's good for both of us. 🙂'
Utterance: 'hello, me too. what is most valued to you?'
Example Output: Yes

Example Input: Context: 'Not completely aware but I do have a filter that I brought from home. What are your needs?' 'Ok me too! I am concerned the most with firewood as it is the basis for my camping activities: campfire, story telling, and producing heat. ' 'OK so how about you take 2 firewoods and 1 food'
Utterance: 'That works for me. May I have two waters since I have more of a need of water'
Example Output: No

Example Input: Context: 'hello!' 'Hi how are you today? ' 'am fine and you?'
Utterance: 'I am good. Do you have any preferences on which items you would like most?'
Example Output:
Yes