PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
12973386-5	1999	Sildenafil causes an erection by inhibiting PDE5, which in turn causes an increase in the intracellular levels of cGMP.	Sildenafil Citrate	0-10	phosphodiesterase 5A	Homo sapiens	44-48