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.

Ex Input:
Context: 'That makes sense. How about we start out with I get 3 firewood, and you get 3 waters?' 'Great idea, that works for me. 🙂' 'Okay, let's do that, and then split the food. Since there are only 3, do you want to flip a coin to see who gets 2 of those?'
Utterance: 'That sounds fair, how much food do you feel you need? '

Ex Output:
Yes


Ex Input:
Context: 
Utterance: 'Hello 🙂 What do you need most??'

Ex Output:
Yes


Ex Input:
Context: 
Utterance: 'Hello, I will start out by saying that I would like to have 3 water because I do not have a nearby water source. What is your situation?'

Ex Output:

Yes