Backyard Camping<br>John and his friends were camping in his backyard. Late that night, the boys heard a growling noise. A large shadow appeared on the tent door. The tent flap flew open and the boys screamed. John's father laughed hysterically at their reaction.
John's dad was camping in the backyard.
We know the father scared the boys while they were camping in the backyard - the father may have been sleeping out there with them, or just out from the house to check up on them.
( z1 camp :ARG0 ( z2 person :ARG0-of ( z3 have-rel-role :ARG1 ( z4 person :name ( z5 name :op "John" ) ) :ARG2 ( z6 dad ) ) ) :location ( z7 backyard ) )