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.
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Question: Context: 
Utterance: 'What are your preferences for water?'

Answer: Yes


Question: Context: 'Hai friend.. my group going to a trip my team members are have some sick and i all have a kid so i need some more package. can you help me?'
Utterance: 'More packages of what exactly? I ave IBD so I tend to drink more than I eat when camping. So I enjoy water.'

Answer: Yes


Question: 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? '

Answer:
Yes