Lost Cat<br>Sam returned to his home after work. He went to feed his cat. Sam's cat was nowhere to be found. Sam searched everywhere for his cat. His neighbor was able to find his cat the next day.
Sam lives in a house.  
The paragraph said that Sam's neighbour found his cat, but it doesn't indicate if Sam's home is a house or an apartment building.  It could be that Sam's apartment neighbour found his cat.  Therefore, saying that Sam lives in a house in neither definitely correct nor incorrect.  The system assumed that Sam returned "home" to a house.  
( z1 live :ARG0 ( z2 person :name ( z3 name :op "Sam" ) ) :location ( z4 house ) )