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: Consider Input: Context: 
Utterance: 'Hi there! I was looking for 3 extra packages of food and 3 packages of firewood.'

Output: No


Input: Consider Input: Context: 'I will submit a deal that might benefit us both.  ' 'We can work on that together' 'What is on your most needed item?'
Utterance: 'I need Food, what is yours?'

Output: Yes


Input: Consider Input: Context: 'Yes, food is my highest. It's necessary for my friend to keep extra around just in case he crashes. Why is water your highest priority?' 'I need the water to drink - I don't trust the water I might find at the campsite.' 'Did you bring any water to start?'
Utterance: 'Yes! Did you bring any food to start?'


Output: No


