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: '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: 'I can't take cold and would badly need to have more firewood.' 'I need more firewood to keep my food going.' 'I get it, in that case I'' take additional packages of food.'
Utterance: 'I don't think so, because I need additional packages of food in case there is an emergency.'

A: No
****
Q: Context: 'I think i can give 1 more fire wood.🙂' 'So, that would be 2 firewood, 2 food and 2 water for me and one of each to you? Thank you ' 'I would really like to come out of this with a bit more. How about 2 food for me and 1 firewood and water?'
Utterance: 'What are your current requirements on food so I can better understand your situation?'

A:
Yes
****