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: 'Hi there! How are you?' 'Great! I'm very excited to go camping, how about you?'
Utterance: 'I am! Now, I need a lot of firewood because we were planning on burning some earlier (to start cooking meals and such). I also need some extra food in case bugs come and eat some (like last trip, ugh). How about I take 2 firewood, 2 food, and you take 3 water, 1 firewood, and 1 food?'
[EX A]: No

[EX Q]: Context: 'Ok, would you do 1 firewood, 2 water and 1 food then?' 'Can I get 3 water and 1 firewood instead?' 'so I get 2 firewood, and 3 food? Ok I will agree to that'
Utterance: 'Great! Sounds like a deal! we have enough food for tonight so I think we will be good. '
[EX A]: No

[EX Q]: Context: 'I really need water though. Are you sure you need that much?' 'Yes please ..! My son has respiratory problems I'll definitely need that 😡😡😡' 'If you really need water, then can I have 2 firewood and 3 food then?'
Utterance: 'No I really need food also ...at least I will take 3 food and 2 water and you can take remaining'
[EX A]:
No