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: 'Hi there! Curious as to what's on your mind regarding each item. I have my own preferences, but will share after you.' 'Hello, well I really need food. Have a lot of extra people.'
Utterance: 'Awesome - same, I also need a ton of food. Will firewood be of interest to you as well? I'll be happy to compensate in this way'

A: Yes
****
Q: Context: 'I know how to filter water so you can have all of the water. I would like as much firewood as possible.' 'me too. I don't care about water since we are camping near a river.' 'I would consider giving you all food and water if I could get all of the wood.'
Utterance: 'Oh really? I think I am able to do it without firewood then. The kids will be full and probably won't ask for smores'

A: No
****
Q: Context: 'Oh well that is something to consider. I love dogs. 🙂. I'd be willing to take less in that case, and let you have 2 of the waters. Would you be OK with leaving me with 1? I'd be willing to split the food up the same way (you get 2, I get 1).' 'That works. I know water is important. I promise I won't be using it to water plants or wash clothes!' '🙂 haha of course! I think we've come to a good agreement then! You get the 2 Waters, and I get Water. You get 2 Foods, and I get 1 Food. And I get the 3 Firewoods. Correct?'
Utterance: 'That is perfect for me and my dog! Yes!'

A:
No
****