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.

Example input: Context: 'What do you think if in the camp we get together and have a meeting between your family and mine? We can have a small party to get to know each other better.' 'Sounds great!' 'Ok, my proposal is to give you all the firewood you need, on the condition that you give me all the water I need. And regarding food we can negotiate.'
Utterance: 'That sounds good. What do you propose on the food?'
Example output: No
Example explanation: The primary utterance does not try to elicit information on the preference order of the participant. So this is correct.
Q: Context: 'The most important is water because I have kidney problem so i need some more water.Without water I can't live.' 'I understand that completely. Would you be willing to take 2 waters, and I take 1 water? I still do need some water for my family. I can't have anyone getting heat stroke. But you can have more.' 'Okay.But I need whole water to survive.'
Utterance: 'Of course. So, what about food? I will definitely need the food. I have a big family, and we all need to eat. I can't have people starving. Can I take all of the food?'
A:
Yes