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: 'Yes, camping trips can be quite fun. I am sure it will be a plesant experience for them.' 'Yah we have a few things planned. One of the things they are looking forward to is reading scary stories by the campfire and making s'mores' 'That sounds like a lot of fun. What do you think you will need for that experience?'
Utterance: 'We likely need a lot of firewood and some water to put out the fire when we are done lol. What are you thinking?'
Example Output: Yes

Example Input: Context: 'How are you today? Did you have any preferences on the supplies we will be trading?'
Utterance: 'I am good. How about yourself? I think I would like some firewood to start off with. We like to have bigger fires. What about you?'
Example Output: Yes

Example Input: Context: 'hello' 'Hello I hope we can work together to find an offer that satisfies both of us.' 'yes we can'
Utterance: 'Ok, could you tell me which item you need more and which one you need less?'
Example Output:
Yes