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: 'How many of each extra package are you thinking you need?'
Utterance: 'I would prefer to take all of the firewood, split the food, and you could have all of the water.  What do you need the most?'

A: Yes
****
Q: Context: 'Hi there.. we're looking forward to this camping trip.. hope you are, too!  Is there anything in particular you guys need / want out of the extra stockpile we've got?' 'Hello! Which item do you need the most?'
Utterance: 'Well we actually really NEED all three items.. but I know you might, too - so I want to make a deal that's fair for you.. is there anything in particular your family needs for the trip?'

A: Yes
****
Q: Context: 'For you?' 'yes. I am yet to know your priority. Which I guess should be either water or firewood' 'That deal is not favorable for me'
Utterance: 'Feel free to counter, but I'm not loving anything that I've gotten so far.'

A:
No
****
