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: 'I need at least one ration of food.  Would it be ok with me:  3 firewood and 1 each of food and water.  If you are ok with that, I am too.' 'Sure, that sounds like a nice deal.' 'That's awesome.  Sounds like we need to set the deal up.'
Utterance: 'Agree, I think after I send this message it will unlock, for me to have 2 water, 2 food and 0 firewood.  Thanks for working together'

A: No
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Q: Context: 'You mean you can't let up one firewood for me?' 'Not this time, I really need all the firewood and food is a large need for my family of 8. We need the firewood to cook all our meals from the animals we hunt since we are short on food.' 'But these are only additional packages☹️'
Utterance: 'I get that and understand completely. I have a large number of mouths to feed making the food a necessity or all the firewood to cook whatever we hunt. How many you have?'

A: Yes
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Q: Context: 'So in order to fully enjoy my on this trip while surviving, I will require mass quantities of food.' 'k i need food as first priority' 'Unacceptable'
Utterance: 'why'

A:
No
****