Definition: 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.
Input: Context: 'Let me give you 2 packages of water for 3 packages of food.' 'well, food is more valuable for me. what is your preference?' 'Looks like we both have a high value for food. I will give you 3 packages of water and you give me 3 packages of food.'
Utterance: 'What is your least preference?'

Yes