Teacher:Given a sentence in Spanish, provide an equivalent paraphrased version from the original that retains the same meaning.
Teacher: Now, understand the problem? Solve this instance: Bertlmann era un amigo cercano y colaborador del difunto Walter Thirring y trabajó junto con John Stewart Bell.
Student:
Bertlmann era amigo íntimo y colaborador de Walter Thirring y trabajó con John Stewart Bell.