<test:bob> <test:has_publication> <test:bob_publication1> .
<test:bob> <test:has_publication> <test:bob_publication2> .
<test:bob> <test:has_publication> <test:bob_publication3> .
<test:alice> <test:has_publication> <test:alice_publication1> .
<test:alice> <test:has_publication> <test:alice_publication2> .
