Classifier Instance:

Anchor text: Global Positioning System
Target Entity: Global_Positioning_System
Preceding Context: There are a number of aids available to pilots, though not all airports are equipped with them. A Visual Approach Slope Indicator (VASI) helps pilots fly the approach for landing. Some airports are equipped with a VHF omnidirectional range (VOR) to help pilots find the direction to the airport. VORs are often accompanied by a distance measuring equipment (DME) to determine the distance to the VOR. VORs are also located off airports, where they serve to provide airways for aircraft to navigate upon. In poor weather, pilots will use an instrument landing system (ILS) to find the runway and fly the correct approach, even if they cannot see the ground. The number of instrument approaches based on the use of the
Succeeding Context: (GPS) is rapidly increasing and may eventually be the primary means for instrument landings.
Paragraph Title: Navigational aids
Source Page: Airport

Ground Truth Types:

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Predicted Types:

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