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: 'Hmm, I need food too. I am willing to split. I will give you 2 food since you claimed it first. Can I have 2 waters then?' 'That's fair, but I have wiggle room on the water, how about I take two food, two firewood and you take 3 water, 1 food, 1 firewood?' 'Is there anyway you will go with that I get two firewood? I need food the most but since you get most of that can I get most of the firewood? So 1 food, 2 firewood, and 2 water for me?'
Utterance: 'You drive a hard bargain. I could really use that firewood. It's going to get cold tonight and these sleeping bags are not worth the price I paid ;)'

Ex Output:
No


Ex Input:
Context: 'Yeah, firewood isn't really something that's "essential" I'd have to say. Yeah, you need it, but still.' 'True. 🙂' 'Seems like we'll be struggling to see who gets the firewood most of all haha'
Utterance: 'No, I like a little firewood.'

Ex Output:
No


Ex Input:
Context: 'OK ' 'Thank you very much. I am anemic so it helps to have all the firewood to keep warm.🙂' 'OK NO MENTION AND WHY YOU WANT FOOD'
Utterance: 'I tend to eat more food when I am active outside. I drink more water too because I don't want to get dehydrated.'

Ex Output:

No