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.

Context: 'How much firewood do you need?' 'i need two food items and one water' 'I will take 2 waters, however I would like 2 food and you can have 1 food and 3 firewoods'
Utterance: 'one food is not enough i am pregnant and i need to eat many meals'
No

Context: 'The 2 packages of food and 2 waters. I get thristy a lot too.' 'Ok, well if I can have 3 packages of firewood, 1 water and 1 food, you can have 2 packages of food and 2 waters. Does that sound good?' 'I like that deal. '
Utterance: 'Sounds good.🙂'
No

Context: 'Awesome, I'd be happy to negotiate that. What is your second most needed item?' 'I'll need water. My kids take medications and need to stay hydrated.' 'Absolutely. My second most needed item is food so that works out well.'
Utterance: 'Well I am happy to give you all my food in exchange for all your water.'

No