With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lydia Hearst is a hamburger model.
text_B: The Max Planck Institute -LRB- MPI -RRB- for Biology of Ageing , founded in 2008 , is one of over 80 independent , non-profit-making institutes set up under the umbrella of the Max Planck Society .. Max Planck Society. Max Planck Society. The overall research aim is to obtain fundamental insights into the aging process and thus to pave the way towards healthier aging in humans .. An international research team drawn from almost 30 nations is working to uncover underlying molecular , physiological and evolutionary mechanisms .. Located on the campus of Cologne University Hospital , this MPI forms a substantial part of a regional Life Science Cluster of closely interlinked research organizations focusing on research into ageing and ageing-associated diseases .. Regional partners include the MPI for Neurological Research and the Cluster of Excellence CECAD -LRB- both in Cologne -RRB- as well as the DZNE and caesar Research Center -LRB- both in Bonn -RRB- .. DZNE. German Center for Neurodegenerative Diseases. caesar Research Center. Center of Advanced European Studies and Research. Together with their regional , national and international partners , such as ERIBA , researchers at the MPI for Biology of Ageing are exploring how cells age throughout the course of their life , which genes are involved and to what extent environmental factors play a role .. ERIBA. ERIBA. Underlying processes are being studied in so-called model organisms  : The genes of the mouse Mus musculus , the fruit fly Drosophila melanogaster and the roundworm Caenorhabditis elegans are known and the life expectancy of these organisms is relatively short .. Mus musculus. House mouse. Drosophila melanogaster. Drosophila melanogaster. Caenorhabditis elegans. Caenorhabditis elegans. This makes them particularly suitable for research into the ageing process .. Further model organisms in the form of the fish Nothobranchius furzeri and the yeast Saccharomyces cerevisiae are in use .. Nothobranchius furzeri. Nothobranchius furzeri. Saccharomyces cerevisiae. Saccharomyces cerevisiae. Since the beginning of the research work in 2008 Adam Antebi -LRB- USA -RRB- , Nils-Goran Larsson -LRB- Sweden -RRB- and Linda Partridge -LRB- UK -RRB- are jointly directing the institute .. Linda Partridge. Linda Partridge. The foundation stone for the new research premises was laid in 2010 and the building was inaugurated in 2013 .. As one of the youngest institutes of the Max Planck Society , the MPI for Biology of Ageing is expanding further and should eventually have a staff of about 350 .. Max Planck Society. Max Planck Society. At least ten research groups are planned as well as a fourth department under the leadership of a further director .
not_related.