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.

[EX Q]: Context: 'Hello, what a great time of year to go camping.' 'Yes I can't wait! So sick of being stuck at home. 🙂' 'It will be nice to get out and explore the great outdoors, even if it is super hot!'
Utterance: 'I agree. What supplies could you use more of?'
[EX A]: Yes

[EX Q]: Context: 
Utterance: 'Hello 🙂 What do you need most??'
[EX A]: Yes

[EX Q]: Context: 'Okay! You can have all the water. I want all the food.' 'yeah sure, I will share with you all the food. What is about firewood?' 'You can have two if I can have one if you're okay with that.'
Utterance: 'My place is so cold, so I want all the firewood for save my children from cold.'
[EX A]:
No