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 Input:
Context: 'I am doing good. Thanks. Which item do you need the most?' 'I was thinking firewood, because the most fun I have camping is roasting marshmellows and hanging out around there. How about you?' 'Oh hmm. I really need extra firewood because I forgot to bring a sleeping bag. I will be freezing to death at night. ☹️'
Utterance: 'Okay, well tell me what you need the least of, if you don't mind.'

Ex Output:
Yes


Ex Input:
Context: 'That seems fair. How about water. How would that be split? I'm very concerned.' 'Me too. There is little natural sources where I'm going. ' 'I'm not familiar with my surroundings. None of us going have ever been to this spot.'
Utterance: 'I mean I would give two waters if I could get one more food. So 2 water for you and 2 food.'

Ex Output:
No


Ex Input:
Context: 'Yeah that's fine.What you need the most?' 'I need food because I have mouths to feed and maybe a firewood?' 'Okay . How much You need each?'
Utterance: '3 Food and 1 Firewood? You get the rest?'

Ex Output:

No


