The Mug<br>Sara loved drinking coffee. She bought a new mug that was really pretty. The first time she used it, she dropped it! Hot coffee splattered everywhere and the mug broke. Sara was so upset!
Sara made coffee. 
The statement is neither correct nor incorrect, because we do not know if Sara made her own coffee. The system may have gotten this wrong because it assumed Sara made the coffee she was drinking. 
( z1 make :ARG0 ( z2 person :name ( z3 name :op "Sara" ) ) :ARG1 ( z4 coffee ) )