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: 'Awesome.  I would prefer getting 3 of my highest priority item though, and maybe you could get 3 of your highest priority item?' 'I  wood really like the firewood as I am afraid of the dark and would like my fire to last all night. ' 'Oh that makes total sense.  I need the food so badly since I am bringing my family with me and they are one hungry bunch aha.  Would you be amenable to me having 3 food packets and you having 3 firewood packets?'
Utterance: 'That would work great. How about water? What is your preference for that?'

Yes