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: 'so if i were to  give you water what would i get ?' 'You'd be getting 1 water, 2 firewood, and 1 food' 'how much food are you willing to offer for water'
Utterance: 'We can go back to my original offer which was honestly more generous.. I get 2 Water, 1 Firewood, 1 food.. you get 1 water, 2 firewood, 2 food.. its honestly a better deal for you 🙂'
Example Output: No

Example Input: Context: 'I am running low on firewood. I need more to keep the fire going and cook food. ' 'Yeah I need firewood too. It's only 50 degrees at night on the mountain, even in the summer.' 'How would you feel about giving me some firewood for food?'
Utterance: 'Maybe, I need food too but I want firewood the most.'
Example Output: No

Example Input: Context: 'In this extra package I need two food' 'wow that is a much' 'because of my big size I want two extra food package '
Utterance: 'i will give you that in exchange for 1 food and 3 water with 2 firewood'
Example Output:
No