Surrounded by a team of Syriza higher-ups, Lafazanis has stepped up public appearances in Athens and elsewhere in the country that "strongly resemble the start of a campaign", a Syriza member said on condition of anonymity.
Refer to the input text as context and select the correct relationship between 'Syriza' and 'Athens' from the available options.
Options: distribution format, member of, headquarters location, parent organization