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.

Ex Input:
Context: 'Hi, '
Utterance: 'Hello. What sort of supplies are you looking for?'

Ex Output:
Yes


Ex Input:
Context: 'What exactly do you mean by majority? As in everything ?' 'I was more thinking 2 Firewood for me , 1 food and 1 water? The rest would be yours.' 'That is a promising bargain but I want at least 2 firewood, it makes for a fun time for my group.'
Utterance: 'Interesting , because my group feels the same way though. How does your group feel about water though?'

Ex Output:
Yes


Ex Input:
Context: 
Utterance: 'Hello I would like to have more water then what I got because I drink a lot'

Ex Output:

No


