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: 'okay friend. In my team old age sicked peoples and kids are there so i need some extra package.' 'Okay friend. Which item do you need the most?' 'I need 3 pack of fire wood and 2 pack of food and 2 pack of water'
Utterance: 'But If I will give you these items I don't get enough package friend.'
Example Output: No

Example Input: Context: 'Hi  - nice to meet you!  I hope we can work out a deal that is good for both of us.'
Utterance: 'Hi, 🙂 It's nice to meet you as well: I also hope we can work something out: Food is my excess trip priority, What is yours?'
Example Output: Yes

Example Input: Context: 'sorry to hear that. i too have kids but my health is ok so i can do with 1 water.' 'Thank you. 🙂 Would 1 food and 3 firewood work for you?' 'No problem🙂, i would be fine with 1 water, 1 food,and 3 firewood.'
Utterance: 'That works for me. Glad we could hammer out a deal. 🙂 What are you using all the firewood for?'
Example Output:
Yes