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.

Example Input: Context: 'Would it be possible to get an extra water also? How do you feel about the firewood? I wish we could split everything evenly.🙂' 'Me too. Firewood is the most important thing to me. We will be somewhere cold and we could use the extra warmth.' 'True. How about I get 2 food, 2 water and 1 firewood. And that will leave you with 2 firewood, 1 water, and 1 food? '
Utterance: 'What do you need the extra water for?'
Example Output: Yes

Example Input: Context: 'I have managed to bring pouches of some of my favorite seasonings. I'm hoping to find some great wild mushrooms in the forest too. ' 'I'm a big fan of well seasoned food and mushrooms! Mmm.. 🙂 Do you think it would also be alright for me to have 2 of the 3 waters since I will be hiking a lot?' 'That would be fine. I was hoping to have 2 but since I am only walking and you are doing more heavy duty hiking, you take them. Agreed?'
Utterance: 'I really appreciate that. Do you think you will be okay with just 1 water since you have health issues?'
Example Output: No

Example Input: Context: 'I get that. I'm going to risk it with the lake water because I'd personally love to have enough food to last 3 weeks (which I'm a little worried about as it is), so I can definitely help you out with the water.' 'thanks! where do you plan on camping? I know popular places are worried about spreading Covid and a lot of offices that give out camping permits are closed.' 'We're going to check out Acadia National Park. I'm not totally sure on the details, I'm letting my boyfriend plan and I'm just handling the packing haha'
Utterance: 'Lol, that's totally understandable. Are you planning to make any campfires?'
Example Output:
Yes