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: 'how do you propose we split the food then?' 'Well I don't mind either way about the food. I'll recommend giving you 2 firewood 1 food and 1 water. ' 'how about you get 3 waters and 2 foods? Does that work better?'
Utterance: 'yes how much firewood. I need at least 1 to cook the food.'

Answer: No


Question: Context: 'Sending good luck your way! Any items in particular you need for your trip?' 'Well, I'll start with a trial offer and we'll go from there' 'Ok, offer away!'
Utterance: 'Well, food is high on my to do list only because I have a big family and we all know how they eat..... Wood well, I can find that along the way if necessary, and same as water so both of those are fairly low on my list... you?'

Answer: Yes


Question: Context: 'I agree that we will! I do love having food as well. Have lots of people coming.' 'I'm not as keen on food, so how does this sound.  I get 2 firewood, 2 waters, and 1 food.  You will get 2 food, 1 firewood, and 1 water. ' 'Hmm, you're getting my top item there though. That still might work.'
Utterance: 'I think it's pretty fair since we'll both get at least one of our top item (firewood) and you get more food (I assume your second priority) and I get more water (my second priority)'

Answer:
No