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: 'Hello!  I've been super thirsty and as a result I was wondering if I could get all 3 packages of water?' 'I like to hike and will need additional water. Can I take one package and you can have the other two? '
Utterance: 'That sounds good to me.  Do you have any kind of preference for firewood or food?'

Yes