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.

Example Input: Context: 'Hello, what are your preferences for extra supplies?  I am greatly in need of food and water.  We will be doing a lot of activity in a hot, dry climate.🙂' 'I prefer firewood because I will get cold at night. I forgot blankets ☹️'
Utterance: 'Would it work for you, then, to give me the three food and three water, and I can give you all of the firewood?'
Example Output: No

Example Input: Context: 'I need at least one ration of food.  Would it be ok with me:  3 firewood and 1 each of food and water.  If you are ok with that, I am too.' 'Sure, that sounds like a nice deal.' 'That's awesome.  Sounds like we need to set the deal up.'
Utterance: 'Agree, I think after I send this message it will unlock, for me to have 2 water, 2 food and 0 firewood.  Thanks for working together'
Example Output: No

Example Input: Context: 
Utterance: 'Hello.  I hope you are well.  I would like to have all of the water, 2 of the firewood and 1 of the food.  '
Example Output:
No

