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: 'I can trade more food but I need a bit more water.  ' 'I do need the water as well, I can  trade more firewood.' 'No I want need at least two packages of water.  I can give you two packages of food and all my firewood.'
Utterance: 'Sorr I can give you 1 water only or I would not have enough for myself. '

No