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.

Q: Context: 
Utterance: 'I have a family of 7 among of which 4 are in growing stages. Being the first time out with the whole family, we are less prepared and in much need of food.'

A: No
****
Q: Context: ' Hallo, how are you doing?' 'i'm well! how are you doing?' 'Good, but in shortage of some stuff.'
Utterance: 'likewise! what do you need?'

A: Yes
****
Q: Context: 'I don't need much firework, so you could have two packages. Could I take all of the water so I can wash my clothes? ' 'Sure, I can wash whatever that needs to be washed out in the lake or river.  🙂' 'Alright, can you repeat the deal with me so we can make sure we are on the same page? '
Utterance: 'ok, I am getting 1 food package, two packages of firewood, and all of the water.  Is this correct?  '

A:
No
****