Generate a sentence about this data: Abel Caballero, inOfficeWhileMonarch, Juan Carlos I of Spain; Juan Carlos I of Spain, birthPlace, Rome; Abel Caballero, inOfficeWhilePrimeMinister, Felipe González; Felipe González, predecessor, Rodolfo Llopis
Abel Caballero was in office while Felipe Gonzalez (whose predecessor was Rodolfo Llopis) was Prime Minister. Abel Caballero was in office whilst Roman born, Juan Carlos I of Spain was Monarch.