Task: Question Answering
Input (English): passage: The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1 e, a spin of 1/2 (same as electron), and has the same mass as an electron. When a positron collides with an electron, annihilation occurs. If this collision occurs at low energies, it results in the production of two or more gamma ray photons (see electron--positron annihilation).
 question: a positron is the antiparticle of the electron?
Output (English): Yes