claim: Dark matter is a hypothetical type of substance that has mass and takes up space.
evidence: Panthers Patras is a sports club based in Patras , Greece .. Patras. Patras. Greece. Greece. It develops the following sports  :. 1 .. Men Baseball. Baseball. Baseball. 2 .. Women Fastpitch softball. Fastpitch softball. Fastpitch softball. Panthers is the only non Athenian team that ever won a baseball championship in Greece and this is a wonder since there is no baseball field in entire Peloponnese area .. Greece. Greece. Peloponnese. Peloponnese. The team plays in the Greek Baseball league which has only two , non Athenian teams -- Panthers Patras and Aris Salonica .. Patras. Patras. Greek Baseball league. Greek Baseball league. Baseball. Baseball