Category Nuances for sexual_intercourse:

• pleasurable,
• mechanical,
• sexual,
• important,
• increased,
• natural,
• adult,
• physical,
• usual,
• behavioral,
• biological,
• serious,
• private,
• strenuous,
• heavy,

Simple Categories for sexual_intercourse:

• activity,
• process,
• event,
• sex,
• response,
• knowledge,
• cause,