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.

[Q]: Context: 'Hello there. I'd like to discuss making a deal.'
Utterance: 'yes, what would you like?'
[A]: Yes


[Q]: Context: 
Utterance: 'How are you today? Did you have any preferences on the supplies we will be trading?'
[A]: Yes


[Q]: Context: 'Looking forward to camping' 'same, i love to camp' 'What do you need most when camping? I hate splitting wood, so  I need firewood'
Utterance: 'I need water to drink and survive, so i need alot of water and food'
[A]:
No