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.

Context: 'Hi, I really need water to stay hydrated during my camping trip because my food supplies are low. Do you have any to spare?' 'Hi.  I can't do that right now.' 'Is there anything that you might need? '
Utterance: 'I would be interested in firewood.  Can I ask you, what are your primary concerns on this trip?'
Yes

Context: 'Hi, how are you, ready for the big camping trip?' 'Yes I am. I'm actually already at the camp and came across some homeless people who could really use all the food they can get.' 'Wow, ok. I'd can give you some food, I'd like to have a little extra food and water as we have a larger group going. '
Utterance: 'I see. Which is more important to you, food or water?'
Yes

Context: 'okay friend. In my team old age sicked peoples and kids are there so i need some extra package.' 'Okay friend. Which item do you need the most?' 'I need 3 pack of fire wood and 2 pack of food and 2 pack of water'
Utterance: 'But If I will give you these items I don't get enough package friend.'

No