With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Andre Agassi's global ranking was 141 in 1997.
text_B: Marine Aircraft Group 39 -LRB- MAG-39 -RRB- is a United States Marine Corps aviation unit based at Marine Corps Base Camp Pendleton , California that is currently composed of five AH-1W Super Cobra and UH-1N Huey light attack squadrons , two CH-46 Sea Knight squadrons , an aviation logistics squadron , and a wing support squadron .. United States. United States. United States Marine Corps. United States Marine Corps. Marine Corps Base Camp Pendleton. Marine Corps Base Camp Pendleton. California. California. AH-1W Super Cobra. AH-1 Cobra. UH-1N Huey. UH-1N. CH-46 Sea Knight. CH-46 Sea Knight. The group falls under the command of the 3rd Marine Aircraft Wing -LRB- 3rd MAW -RRB- and the 1st Marine Expeditionary Force -LRB- I MEF -RRB- .. 3rd Marine Aircraft Wing. 3rd Marine Aircraft Wing. 1st Marine Expeditionary Force. 1st Marine Expeditionary Force
not_related.