Sentence:  For three years , since the liquor territorial conference , Torrio had , with his elastic patience , and because he <WSD>knew</WSD> that retaliation could cause only violent warfare and disaster to business , tolerated O ' Banion 's impudent double-crossing . 
Meaning of the word marked with <WSD> tags:  be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about