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: 'How are you today? Did you have any preferences on the supplies we will be trading?'
Utterance: 'I am good. How about yourself? I think I would like some firewood to start off with. We like to have bigger fires. What about you?'

SOLUTION: Yes

PROBLEM: Context: 'Sure that sounds fair. Thank you. Besides water what do you need for your trip?' 'great. Then can you give 2 food instead? We eat a lot and need more to go through the night...' 'Ok I understand. Since you're willing to give me 2 water I can give you 2 food. Would it be ok then if I ask for 2 firewood? The kids were talking about making s-mores'
Utterance: 'I can give you one firewood. I need more to boil the water from the river since you will get more water. How about that?'

SOLUTION: No

PROBLEM: Context: 'Hi, what is your highest priority item?'
Utterance: 'I would love to have extra food for my trip, bringing the family! how about you?'

SOLUTION:
Yes

