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.
--------
Question: Context: 
Utterance: 'Hi, I brought some water with me. How much do you need? '

Answer: Yes


Question: Context: 'I have a lot of people here.I need food.' 'I also need food, but am willing to share and give you extra firewood so you can cook more food. I am not able to hunt or fish and the extra food will help if I am not able to get around. ' 'I can share water for firewood.'
Utterance: 'Optimally, I would like 3 food and 2 water which would leave you with 0 food, 1 water and 3 firewood. I think it will be easier if you also tell me your optimal wants then we can go from there.'

Answer: Yes


Question: Context: 'HI 🙂I would like all the food and 1 wood, you can have the rest' 'I need 2 woods first '
Utterance: 'That is fine since there are 3 wood and I want 1. '

Answer:
No