Assertion: sail | /r/HasProperty | connected to the boom
Facets:
value: on a mainsail
type: LOCATION
Source sentences:
text: On a jib, the sheet is connected to the clew; on a mainsail, the sheet is connected to the boom (if present) near the clew.  
text: On a jib, the sheet is connected to the clew; on a mainsail, the sheet is connected to the boom (if present) near the clew.
text: On a jib, the sheet is connected to the clew; on a mainsail, the sheet is connected to the boom (if present) near the clew.