Question: Has Justin Timberlake ever written a song about Britney Spears?, Answer:Yes, Description of Justin Timberlake: American singer, record producer, and actor, Fact1: Justin Timberlake and Britney Spears dated in 1999., Fact2: In 2002, Justin Timberlake released a music video for his breakup song 'Cry Me A River' and featured an actress who resembled his then ex Britney Spears.
Step1: Who did Justin Timberlake date in 1999?, Step2: Who was the song 'Cry Me A River' by Justin timberlake about?, Step3: Is #1 and #2 the same?, Wikipedia page for step 1: Justin Timberlake, Wikipedia page for step 2: Cry Me A River, Wikipedia page for step 3: , not_definitive_answer: False, incorrect_answer: False