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meditation → CapableOf → improve concentration	0.63
chewing gum → CapableOf → improve concentration	0.50
caffeine → CapableOf → improve concentration	0.50
exercise → CapableOf → improve concentration	0.42
massage → CapableOf → improve concentration	0.41
athlete → CapableOf → improve concentration	0.40
martial art → CapableOf → improve concentration	0.38
ginseng → CapableOf → improve concentration	0.38
benefit → CapableOf → improve concentration	0.38
caffeine (aspect of coffee) → CapableOf → improve concentration	0.34
dopamine → CapableOf → improve concentration	0.34
nicotine → CapableOf → improve concentration	0.33
caffeine (aspect of tea) → CapableOf → improve concentration	0.32
lemon balm → CapableOf → improve concentration	0.31
drink → CapableOf → improve concentration	0.28
magnesium → CapableOf → improve concentration	0.27
turmeric → CapableOf → improve concentration	0.27
lavender → CapableOf → improve concentration	0.25
acupuncture → CapableOf → improve concentration	0.24
oxygen → CapableOf → improve concentration	0.22
combination → CapableOf → improve concentration	0.22
serotonin → CapableOf → improve concentration	0.19
carnelian → CapableOf → improve concentration	0.16
choline → CapableOf → improve concentration	0.16
knitting → CapableOf → improve concentration	0.16
melatonin → CapableOf → improve concentration	0.16
methylphenidate → CapableOf → improve concentration	0.16
walnut → CapableOf → improve concentration	0.16
benefit (aspect of yoga) → CapableOf → improve concentration	0.16