What what is chemical element has affected by tin poisoning and also which starts with letter t
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q11344 . ?sbj wdt:P1542 wd:Q7807844 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 't')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
chemical element: Q11344 tin poisoning: Q7807844