Some numbers don't add up:

Query for the linked named entity "Albert Einstein" suggests that there are 44 content items in which the lined entity "Francois Hollande" also appears
https://dev.impresso-project.ch/app/search?sq=CgIYAgoaEAIYECoUMi01MC1BbGJlcnRfRWluc3RlaW4=&p=1

When doing and AND query for both linked entities we expect to have 44 content items as result but we get 55:

https://dev.impresso-project.ch/app/search?sq=CgIYAgozEAEYECoUMi01MC1BbGJlcnRfRWluc3RlaW4qFzItNTAtRnJhbsOnb2lzX0hvbGxhbmRl&p=1