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: 'What about you take 1 water and the firewood. I take 2 waters and all the food' 'That leaves me with very little. Can I have 1 water, 2 firewood, and 2 food?' 'you would get 1 water and all 3 firewood. I would get 2 water and all 3 food. You have one less than me but the food is worth less'
Utterance: 'I will make it work. Let's make a deal!'

A: No
****
Q: Context: 'Hey there. How are you?' 'not soo good, i am hungry' 'Uh oh. What are you preferences on supplies?'
Utterance: 'food, then water, then firewood, and yours?'

A:
Yes
****