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: 'I may be able to do something with regards to food. Do you have enough water?' 'I have more water than I need. How is your water supply?' 'I could use some more water as I get dehydrated easily. Since you have enough, I could give you and extra package of food for your water.'
Utterance: 'That sounds like a deal, what would you like to do as far as the firewood goes?'
No

Context: 'How would you feel about giving me some firewood for food?' 'Maybe, I need food too but I want firewood the most.' 'Do you have a deal to offer?'
Utterance: 'I would like 2 firewood, and I don't care about anything else. I would give you 2 water and 3 food'
No

Context: 'food is necessary for all living beings. ' 'I am traveling with a big group so we need more water.'
Utterance: 'lots of water only for when u have thirsty'

No