`_:alice1 <follows> _:bob0 .` `_:alice2 <follows> _:bob1 .` `_:alice3 <follows> _:bob2 .` `_:alice4 <follows> _:bob3 .` `_:alice1 <friend1> _:bob5 .` `_:alice2 <friend1> _:bob6 .` `_:alice3 <friend1> _:bob7 .`