<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["es", "en"].<end_of_turn>
<start_of_turn>user
Frase 1: Desde 2003, Sharon Northe ha sido la cabeza del grupo, desde 2017 Heather Weaver ha sido la presidenta. 
Frase 2: Heather Weaver ha sido la directora del grupo desde 2003 y Sharon Northe ha sido presidenta desde 2017. 
Pregunta: ¿Expresan la frase 1 y la frase 2 el mismo significado?<end_of_turn>
<start_of_turn>model
No, sentences 1 and 2 do not express the same meaning. In sentence 1, Sharon Northe has been the head of the group since 2003, while Heather Weaver became president in 2017. In sentence 2, Heather Weaver has been the head of the group since 2003, and Sharon Northe has been the president since 2017. The positions of "director" and "president" are swapped in sentences, changing the meaning of who has been in charge of each position since when.<end_of_turn><eos>