TASK DEFINITION: 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.
PROBLEM: Context: 'I am hoping to receive 2 packages of food so that way you also have 1. ' 'That sounds great to me. I'm hoping to get 2 firewood, 1 water, and 1 food out of the deal. I'm amicable to more discussion though.' 'This also sounds like a fair deal to me! I am happy that we have reached a compromise so quickly on the packages based on our needs! '
Utterance: 'Me as well! I'm glad we could come to such a comprimise.'

SOLUTION: No

PROBLEM: Context: 
Utterance: 'Hello, what is your preference for supplies?  I would prefer to have as much extra firewood as possible, but am relatively indifferent to the rest.'

SOLUTION: Yes

PROBLEM: Context: 
Utterance: 'Hi there! Curious as to what's on your mind regarding each item. I have my own preferences, but will share after you.'

SOLUTION:
Yes