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: 'I get it, in that case and to be a fair deal. I will have 2 of food, 1 of water and firewood each.' 'That seems fair however I would like to have plenty of food also. I think it would be fair to have 2 firewood, 1 food and 2 water ' 'I ain't sure if you want 1 or 2 packages of food'
Utterance: 'I would like 2 packages of food'
Example Output: No

Example Input: Context: 'Yes definitely!  I am pretty easy to work with and would like a deal that will help us both out as much as possible.' ' The item I need the most is water because I need to hydrate to stay strong and achieve my goals. And you?' 'I would say water as well because I am very active and build up thirst as a result.  However, I would be willing to compromise on things to allow you to have more water.'
Utterance: 'The item that I need the least is firewood because I will dedicate myself to look it up at the camp. And you?'
Example Output: Yes

Example Input: Context: 
Utterance: 'Hi, what is your highest priority item?'
Example Output:
Yes