Assertion: als's cause | /r/HasProperty | suggested for als
Facets:
Source sentences:
text: Although many causes of motor neuron degeneration have been suggested for ALS, none has yet been proven responsible.
text: Although many causes of motor neuron degeneration have been suggested for ALS, none has yet been proven responsible.
text: Although many causes of motor neuron degeneration have been suggested for ALS, none has yet been proven responsible.